Let's be real here, the logistics of Ralph raping anyone pretty much rule it out as a possibility. The specific conditions that need to exist for his penis to enter a human vagina necessitate a willing participant.
I believe Ralph to be a lot of things, many of them bad, however I don't peg him as a rapist by any measure.
That the physicality of the situation throws it into doubt goes without saying, but apart from the Arby's incident none of the myriad of spurned ex GFs has made any insinuation that he has done this, or that he would be even capable of this.
This kind of behaviour reminds me of someone I knew, ultimately I have no clue why people behave like this - unless they get personal satisfaction in the moment - but I do know that best course of action is to get them fucked off ASAP.
Mr. Vickers' tweets are very. . .illuminating, that's for sure. It's possible that "good" parents can have "bad" kids (like in the case of sociopathy, debilitating mental illness, an otherwise good kid getting involved with the wrong crowd, etc.), but you don't get BPD headcases like Faith from having a good home life.
I think this is pretty unfair, lots of personality disorders are things people are genetically predisposed to - so Faith unfortunately may have just been born this way.
I've known plenty of people personally who had good home lives, they just went off the rails. Be that with drugs, or whatever - usually their siblings would be fine comparatively.
I'm not saying Mr. Vickers wasn't abusive, we just don't know, but in the end people are a combination of their genetics and their environment. So it could be either, or both that is causing her to be a nutcase.