Maybe you could try leaving some food around the house for her to eat when she wants to eat IYKWIM? Just let her pick at it through the day. It may not be ideal, especially considering she used to eat when you ate etc, but at least you know she might be getting something. Maybe also the change does have her out of sorts a little bit (combined with the teething too). Everything is new to her ATM and she is just adjusting to her new surroundings I suppose.

If you are getting really worried about her, then take her to a Doctor, even if just to ease your mind if nothing else.