Faith is demonstrating that she is reluctant to be around Scott. She is behaving out of character, now not liking him.
I know the show would never "GO THERE", but if I were Mariah, I would certainly be asking her about possible 'sexual abuse' related to Scott.
I know it is awful subject and not a frivolous thing to throw around, but Sharon should be getting a clue that something is just not right. In the real world, Sharon would be oblivious to this! She only cares about her boy toy.