Yes why not call Momma Angie and baby Angel, keeping all fingers and paws crossed momma and baby will continue to do well and keep safe, yes you can use advantage on kittens, but check with a vet because i too am not sure how old they have to be, probably at least six weeks old i would think, if i remember right we did ellie's babies at about that age . good luck and all the best to you and your new little cat family.