It might be more subtle to push her away, maybe do some menacing or make things look like enough of a hassle that they'll decide to take off, and being aggressive probably is going to lead into some kind of trap or later problem... but, well, Solars sometimes gotta Solar up and hit a fang-faced abomination with another fang-faced abomination.
[] Crush her hand.
... and yet... sigh, Malcolm is still new to it all, and needs to think about his sister. I suppose he'd try to keep it low-key to start....
[X] Push her away.