Oh!! Poor little kitty! 3 teeth pulled!! There couldn't possibly be something else bothering the kitty, could there? When the vet did the extraction...the whole tooth was removed right? Have your friend see if she can look in kitty's mouth to see if there might be a tooth splinter or swollen gums or possibly an infection. Maybe there is a pain killer she could administer if that is the problem??
I was going to suggest wet food too, but it sounds like she has already tried that route. Maybe have her try a variety until she finds one that kitty likes. She may also want to try making chicken and rice for the kitty, tsee if she'll eat it. I make chicken and rice for my boys when they're not feeling well.
I sure hope the kitty feels better! Do keep us posted and let us know how she is doing!

I was just reading from my Cornell University of Vet Medicine newsletter about cats and dental procedures. It was interesting to discover that cats can survive with no teeth at all! As I have discovered with my boys, most cats just swallow their food without chewing!