The only place I remember this being mentioned was in Pellegrino's "Her Name, Titanic". I don't remember this incident being mentioned in the American testimony. I could look into the British testimony and see if it pops up there.
In Walter Lord's "A Night To Remember" they say that when Bride went out on the boat deck to check the situation and then returned to the wireless cabin, there was a fainted woman there whom a husband had brought in. The woman was given a chair and some water, and when she was feeling a bit better, the couple left. I don't think she was Rosa Abbott for her husband was not on board (if it was her, then the 'husband' would have probably been one of her sons).