I hope my spanish professor never reads this...

Today was rather frustrating. I missed Spanish class this morning for the first time because I have the flu. I spent the morning working on homework and I didn't eat anything so I could still go to my other classes without getting sick at school. Although we're allowed five absences in my Spanish class, I still felt guilty for missing because I have been supplying the computer for the class. Every day as soon as I get off the bus, I go to the Spanish classroom and set up my computer for the professor to use. I offered the second day of class to let her use my computer just to show us how to do the online homework. It turns out she doesn't know how to do the online homework, and so I got roped into explaining to the class how to do it (even though I'd only used the website once). Then she told the class that I was the teacher for the online homework and to come to me with questions. She then proceeded to use my computer for the rest of her lesson which heavily involved a PowerPoint presentation. All was well until I went to get my computer at the end of class and she said to me, "you'll be here tomorrow with that, right?" I kind of laughed and said, sure. I was being nice, which is good, right? Wrong. All of these things should have been a warning sign that she was going to utilize me in whatever way she saw fit.
For the past three weeks I've allowed her to use my computer every day. Yes, she has said thank-you and that is nice but it doesn't stop there. Over the course of the first week of class I spoke with her about her computer situation. She told me that she does have access to a laptop, but that it really belongs to her husband and it's so old and heavy, she hates to carry it around. I understand that, my computer is about 8 lbs. and I haul it to and from Provo on the bus every day. Then, the second week of class I ordered a tablet which is only 3 lbs. Very nice for me, but not so great for my Spanish Professor because the tablet doesn't have the right port to hook into the projector in the Spanish classroom. I was concerned about leaving her in a lurch and so I let her know last week that I would soon be switching computers. Before doing this however, I talked to my Dad, who happens to work in BYU's IT department. I told him the situation: that I was supplying the computer for my class and asked if BYU could possibly lend my Spanish Professor a laptop. He assured me that they could and even found the contact information for the IT guy assigned to her department. I took the information to my professor when I told her about not being able to supply the computer for the class starting sometime in the next couple of weeks. She seemed very excited about the prospect of getting a computer from BYU. I explained to her that it would just be a rental and that she would have to return it when she was no longer teaching. She said that was just fine and I offered to have my Dad contact the IT guy for her department if she felt uncomfortable doing so. She said that would be wonderful and so I dutifully called my Dad and asked him to call Mr. Humanities Department IT guy. So he did. He called and e-mailed. He even talked to the IT guy's student employees. I spent time trying to get her a computer and so did my dad.
Finally, the IT guy responded in an e-mail yesterday and assured us that he could get my Spanish Professor a computer. I told her this in class and she seemed ecstatic. I told her that the IT guy would be contacting her and she said that would be okay. Everything seemed golden to me. That is, until I opened up my e-mail this morning to see a forwarded message from my Dad. Mr. IT guy had done some research and some calling around and he sent an e-mail to my Dad informing him that my Spanish Professor ALREADY HAS A COMPUTER FROM BYU!!! What?! I reread the e-mail again. That's right, her department has already issued her a laptop that she won't use because she has complained that it weighs too much. I couldn't believe it. Here I am hauling my giant, rather heavy laptop on the bus an hour each way every single day of the week so that she has one to use. I come early to set it up every day. I help her in class when she has computer problems. And now I find out that she really has access to two different laptops and has instead been using mine. That is a little frustrating, but I can handle it. What bothers me even more is that she let me waste my time, my Dad's time and Mr. IT guy's time trying to get her a laptop when she already has one. I don't understand why she didn't just tell me that she already had one. I also don't understand what she thought would happen. Did she think she would get issued another laptop? She repeatedly told me that she wanted a small laptop and I told her that I would do my best, but that the department decided what to issue her. She knew all along that she already had a laptop from BYU. She could have asked to trade it in for a different one, but instead she decided to not bother telling me at all. Now I have to go to class tomorrow and I know she'll ask me about it, just like she does every day. What am I supposed to say? No, you can't have another one. I'm stuck in this awkward situation where I have to, in some sense, call her out on the information she withheld. I don't know what to do. I'll just try to be as polite as I can and let her know she won't be getting another computer.
The good news (and sort of bad news at the same time) is that this situation has answered a question I've been puzzling over lately. I generally try to be as nice as I can to people. I offer to help when I can and I always follow through with what I say I'll do. Recently I've found myself in a few different situations, the one above included, where my kindness has landed me in a rut. Which makes me wonder, is there such a thing as being too nice? The old me would have said no, but now I'm not so sure. I guess my rose-colored glasses just fell off.