One great thing about Mums is they bring the kitten up for you
You get to play, Mum gets the sticky bums and bad manners
Of course a young Mum like Rosie, or any of the other young Mums currently within the Purrs Network, will be fully socialised themselves (and spayed) before they are re-homed, so you'll know exactly what you're getting and yet these young Mums are barely more than kittens themselves so have a great deal of kitten-ness in them, and living to catch up on!