I really, really, really, don't get the point of a lawsuit. I don't know if that super chat to Null was real or not, but if anyone is whispering in her ear about how she potentially has a case against Ralph, she needs to forget about it. The only reason I can think of suggesting such a course of action is to try to use Claire as a battering ram against Ralph. There doesn't seem to be much of a case. There is zero evidence I'm aware of that Ralph was the hacker. There is zero evidence that I'm aware of that Ralph was involved in a conspiracy to hack any of Claire's accounts or that he directed anyone to do so. In the unlikely event Ralph was found civilly liable, the amount of any judgment he would actually pay would probably be $0.
Claire probably has enough to get a restraining order on Ralph to protect her and her family from harassment, but I don't think any harassment would really occur for as long as she was in a state of DFE. If her reactivation of her Twitter account is a signal that she actually does want to come back and make some sort of content, I would recommend focusing on people like Rekieta who have enough of a moral compass to not use the hacked material in the way that Ralph did and will again if she actually sues