Van Helsing, a mentally challenged mother
I understand quite well that on such a situation, you'd like to rescue people.
Or that you would risk everything to keep a low profile and search your kid.
But it is quite clear,from the beguining, that you can't do both.
By the way, if your main strong point is your exeptional physical qualities and not so much shooting, you could carry a weapon that use it, like an axe, a machete.
Not only could it be handy, but it woul also help you NOT sending 'I'm here' message to all the blood suckers around.