I agree, first speak with your veterinarian. You might also want to try and isolate her when so many people are around. The whole situation could be very upsetting, especially if people might be feeling sorry for her and giving her too much "people" food. I'm sure she's nervous because of all of the people being around, and she can also probably detect that you are all under a great amount of stress and very sad.
Good luck and take care of yourself. I'm so sorry about your loss.