In this picture:
Momma looks healthy enough and of a decent body weight to go ahead with the spay surgery. I would talk with your vet to make 100% absolutely certain he/she is comfortable with going ahead, but as long as the kittens are all eating on their own now (and Momma's milk is drying up), you can go ahead with that now. Keep in mind that Momma may come right back into estrus pretty quickly now that her kittens are getting older and maturing ... make certain she has at least two closed doors between her and the outside at all times so she doesn't escape and get pregnant again.
Momma looks healthy enough and of a decent body weight to go ahead with the spay surgery. I would talk with your vet to make 100% absolutely certain he/she is comfortable with going ahead, but as long as the kittens are all eating on their own now (and Momma's milk is drying up), you can go ahead with that now. Keep in mind that Momma may come right back into estrus pretty quickly now that her kittens are getting older and maturing ... make certain she has at least two closed doors between her and the outside at all times so she doesn't escape and get pregnant again.
