I hate it when Brax and Casey are divided more than anything so I agree with you to a certain degree but I have to defend Ricky in this scenario.
When Adam was manipulating her, she had a clear agenda to separate Brax from his brothers which I was hating. But in the aftermath of Brax's shooting I thought it became clear very quickly that that was Adam's agenda and not hers. She tried to leave Brax numerous times because she didn't want to come between him and his family. She tried to walk away from him at least four or five times. He kept begging her to stay and he eventually got sick of it and gave her an ultimatum - stay or walk out the door and never come back. Brax was adamant. But once Ricky moved in she became more and more guilty seeing the strain her presence had placed on Brax and Casey's relationship and how upset Brax was and she tried to sneak away so he couldn't stop her. Tamara caught her and convinced her to stay. Ricky won me over around this time.
I'm really struggling with her character. Sometimes I like her, sometimes I don't.
I think it's because IMO she knew what she was doing when she came to the Bay and I'm not convinced she was completely manipulated by Adam. She knew Adam and I don't know what she thought he was going to do at the end. Adam blamed Brax for leaving him to die, and actually Heath was the one who left him (same family different brother), so it's not like he lied about being left for to die. She had so many opportunities to come clean but she hasn't, they would've been better off knowing who was behind it all. Also Jamie was also 'manipulated' by Adam but he ended up in jail, and she got away with it. Tamara said she remembered something that could help her at the trail - she needed Tamara for the trail she would have even if she moved out, she didn't have to stay at the Braxton's house. Her trial didn't have anything to do with her living arrangements. I think I'm starting to have a problem that all criminal activities done by main characters happen to be justified and forgotten, I'm hoping they will change that when RB leave (Jesse, Roman, Ruby, Kane, Will have done wrong things but they paid for that).
I actually liked her when she came to the Bay, I thought she was better match for Brax that Nat and Charlie, but after all that 'revenge' storyline and aftermath I just don't like her all the time.
I look forward seeing Brax without Heath. Tonight's episode was bittersweet, Brax was both happy and sad that Heath's leaving, I really liked their brotherly bond.