Female Pug / Boston Terrier Brindle White for Rehoming

I'm trying to rehome my female bugg dog now. She's named Keko. In February, she turns 3 yr old. She loves to cuddle. Even when someone knocks at the door, she doesn't bark at all. She is trained as a kennel, and she knows how to use a doggy door. Before I got her, she had never been taken on a walk, but she gets really well used to it. Reason for the home is because I've got her for another dog I own for a friend, but they're not playing. I believe she'd be the best of herself. That doesn't say that just doesn't like other dogs playing. She's not set and she used to have puppies. I'm asking for a $400 rehome fee only so she's going to a good home.