“Thats not my son!?? As in, you got the wrong guy or, as in, no son of mine would do anything like that?”
I’m thinking she’s saying, “This son I once knew has gone over the deep end. I don’t even recognize him anymore.”
As tempting as it is to pile on the family, there are times when kids completely rebel against all they’ve been taught.
He may very well have been a completely different person before he converted to the “Religion of Peace.”