They are so cute! Do you have a trap and a carrier? To catch the mom you need to put the kittens in the carrier and cover it with a towel. You butt the trap up to the carrier with the open end out. Cover it with towels along with the carrier (like a big tunnel). When the mom hears the kittens meowing she will walk through the trap door to get to the kittens. You will then have the mom catin the trap and the kittens will be safe in the carrier. Having the kittens is the perfect way to catch her.