<human>: Can you summarize the given text in a few sentences?

I don't consider myself to be that socially awkward but hot damn I have really gotten myself into a pickle. 

At my band camp every year the sections do skits. For our skit 2 years ago we decided to act out a story. A few people brought in storybooks, including me, and we chose one to act out. The book I brought belonged to my mom when she was little and I'm pretty sure it has sentimental value. We didn't choose mine, and so the instructor ended up carrying the books we didn't use around for the rest of camp. I kept forgetting to ask for my book back, and she ended up leaving before I could ask.

I forgot about it for awhile. Then a few months later I was like "fuck, wheres my book?" I have no idea if she took it or if she gave it to my director or what. I decided to just wait and ask her at the next band camp, which was a few months ago. 

The next band camp rolled around, and she came for a day. I was planning on asking her about it when I had a spare moment, but she was busy all day with a different section, and again she ended up leaving before I could talk to her. Now, its a few months after that and she won't be at the next band camp because she is moving/she moved(not sure which). 

I feel guilty as fuck because I essentially abondoned my mom's book. She has no idea and I have no idea if she even really cares. I also am baffled as to where the book is. Why would the instructor keep it? What the hell did she do with it? 

I've been considering messaging her on facebook, but I think that might be awkward? Its literally my only way of contacting her. We aren't friends but her profile is public.
<bot>: I think a marching band instructor has a book that used to belong to my mom that I forgot to get back from her 2 years ago and I feel terrible and I don't know what to do.