I imagine Rachel bought it and she’s just living there. It is a bit weird, I don’t follow Rachel much but she seems to have dropped her family for her new partner which, it’s great she’s going out and having fun but when you’d rather hang out with new friends etc than see newborn family members it’s seems a bit out of character for someone who seemed very family oriented. She’s barely seen Luke, wasn’t it his first birthday the first time she’s seen him since birth! He didn’t have a clue who she was, or was sad to see!