A 7 month old kitten showed up at my house 4 weeks ago with very matted hair under her front legs and belly. I took her to the vet who spayed her, only to find out that she was 2 weeks shy of giving birth! Unfortunately, once they open her up, they can't close her. She is SO matted. I tried using a brush w/o much luck. What is the best and most gentle way to do this? Thank you and God bless for any help.