He's not the dad. Just the Mom's boyfriend. I don't even think that they're engaged.

A drug addict is dangerous to just have hanging around. Nick already showed it when he stole morphine from his ill neighbor.

That would be a better scenario than what the show is currently showing.

She seems like an incompetent school counselor.

Nick is a danger to the community and stealing a neighbor's morphine was really disgusting. I'd like to see that character just killed off.