Ain't that what TV's for?
Between The Bachelor, Oprah, Dr. Phil, Desperate Housewives, Bridezilla, The Food Network, The Lifetime Network, TLC, the shopping channels, and all those wedding dress shows, cake decorating shows, and reality shows there's got to be SOMETHING on that she can be glued to.
What's wrong with, "I'd love to stay and chat but I have to study. Here's a some snacks, a drink, and the TV remote. Let me know if you need anything else. See you later!"
My wife is working on her Master's degree and she puts studying ahead of EVERYTHING else. It doesn't matter who you are, when it's study time; it's study time. Whoever you are, you're just going to have to wait. Everybody understands. It's never been a problem.
Not everybody likes a lot of the stuff that's on TV, lots of people hate all those things you mentioned.
I'd advise just having her bring a book or something. Time flies fast with a good novel.