YOU IDIOTS! STOP BEING SELFISH FOR ONCE IN YOUR LIVES! OPTION 2 IS EXACTLY WHAT SHE NEEDS! TAKING MATTERS INTO YOUR OWN HANDS IS JUST GOING TO MAKE SHIT WORSE!
To be fair that's realistic lol, they're starting to think more on what future Colin has if they do nothing, but they're still too shortsighted to see beyond their relationship with her.
Oh, I get it, the bear is a Chekhov's Gun, they believe adults can't help, so they'll try deal with everything themselves, long run maybe even try kill Colin dad, they'll fail, will need to run away from him, cue mama bear to save the day by mauling him to death
Then Colin continues living and growing up alone in the forest, with Mary and Riko being her mommy girlfriends