Megyn was,"out for blood", which might even be what Trump meant to say, but he responds and talks so fast in some of his comebacks that he doesn't always pick the best words.
Well stated, and it is probably what he meant to say.
Trump has an odd way of talking, his "Blood coming out of her eyes" is his way of saying "she had blood in her eyes". And she did. Every time she went after Troop she went for blood. He also mis spoke he said "where ever" when he meant "whenever" as in whenever she was talking to me.