Britney Spears has been keeping a low profile since leaving rehab earlier this week. The popstar has been spending time at home and visiting with ex Kevin Federline and her two boys. "She is going to lay low," says a friend. "She's taking care of herself." Of the album Spears was working on in the months leading up to her stay at Promises, R&B star Ne-Yo - who was lined up to collaborate - told People mag, "The Britney stuff is on the back burner right now because Britney is fighting her battles and dealing with her demons. I really think if people leave Britney alone for a minute that she'll be all right... Musically she definitely has a chance to come back. Now she's got to do what Whitney did. She has to take time to get the negativity out of her life so that she can come back and do what people love her for in the first place."