that's great news! well.. lady chins are the men in the house!
will you be getting 2 boys? just remember to triple check the sex of the babies - don't believe what anybody tells you (my first chin was sold to me as a girl, he was a boy. another chin we got to be the first chin's friend was supposed to be a boy, she's very much a girl.. we only found out when there were three little babies peeking at us - and she was sexed by 2 breeders. my boy had to be neutered and we lost him. it's been 5 months and i still cry most days. i just got a rescue chin that was supposed to be a boy. it's a girl.)
will they live with sammy? go really slow on introductions and don't panic if it doesn't look like they'd never be able to live together (although that may happen) - chinchi and fluffy took about two months but after that they were inseparable..