I'll just make the suggestion for her to go to all the shops. Put together a list of questions, and write up what you want for sure. Then take a notebook to take notes for each shop and to get names of the people you deal with. Get familiar with their policies for repairs and tune ups. Then take it home and do a little comparison and see which shop comes out on top.
If I had to go with four shops, I'd go with Mission Bay, Yojimbo's, Rapid Transit, and Kozy's. They're all comfortably within her apartment, so that's also a bonus for her, especially if she needs to run over and get some basic maintenance done on her bike.
Koffee