I'm confused by your post. Are you saying your friend's cat is pregnant and having kittens, or are they planning to get the cat pregnant?

Please talk with your mom and friend about how many homeless animals are out there. Do some reading on the internet. Your friend's kitty needs to be spayed so she won't have babies. So many cats are killed in shelters every single day. You sound like you love cats and give a good home. Please consider rescuing a cat.