Guys, I have no idea what to do here

Ok, so, a colleague at my work has left because she’s on maternity leave and I really liked her (and so did everyone else) so she’s invited some of us to a lunch at the weekend as her away-party kind of thing. I don’t normally go to social events because of anxiety/my introverted nature but I wanted to make an exception for her. Here’s the problem – I’m the only vegetarian there and this is the menu;

There’s practically nothing vegetarian there. What do I do? Just take the side salad with some chips or something and then a dessert?? The only main that could possibly be vegetarian is the Tagliatelle but it has parmesan in it which means it most likely contains rennet. 

Should I be a pain to the cooks and ask for it without the parmesan? But then what if they add it anyway and I have to make a fuss about it, which I really really don’t want to and probably won’t in front of a bunch of colleagues. I don’t know what to do ://