again, legally. Yes.
again, also for those that somewhat follow. Yes.
But no matter how she pulls it off, it will damage his career. You cant prevent this. If you google him these days the fake RO is one of the first things that comes up, and it is not the background of what actually happened or the one article that it was dismissed (people magazine still claims that he has a TRO, which he never even got), but the fact that a 13 year old filed a restraining order against her dad. The first reaction is not that the child is lying or abusive herself, the first reaction will always be #BelieveAllChildren. I wouldnt be too surprised if this has already destroyed his career entirely (he landed the Bad Boys gig before this, the Wales Con and Seattle Gig are small jobs since then, jobs he probably wouldnt take if he was in demand). Obviously plenty men get through Hollywood with no scratches despite real abuse allegations, but that's because they are pulled under the rug, they only come up if you specifically search for them. first Alice massively impacted his carereer by a array of false allegations and by harassment on set, that probably ruled him out from getting lead roles because it's very hard to get lead roles if there is a ticking time bomb waiting to unleash. Then Ella's fake RO made it even worse.
So yes, no matter how ridiculous and false the accusations are, the consequences are severe.