Here's a life lesson: In real life, you can go to Dragon*Con, a 4-day-long convention packed with eighty thousand other geeks in Atlanta, many of whom closely share your interests in RPGs, sci-fi, science, Star Trek, Star Wars, and more and yet still feel completely alone and have no social interaction. But if you do that, you're almost wasting your money. Now when I go I specifically try to go out of my way to meet people and exchange contact information because as I've got older, I value friendships more and more and I realize how hard friends are to find. At a certain point, you got to start interacting or you're going to have a bad time.
Besides, it's one thing to be be shy, but these are her co-workers and to some extent, the closest thing she has to a family since she's a 2-year-old Nekovalkyrja. She sees them and eats with them every day now.
Furthermore, if you just post about what your character eating, why is that even worth reading? I'm serious. I've often said that he ideal RP post is interesting to read, involves other characters, and advances the story. A post about your character eating really is none of those. So I encourage you to branch out and have her make at least one close friend.