Nah, your not a horrible mom , atleast how I see it. Your kids will really appreciate your allowing them to learn independence and self sufficiency
As for Isaiah, he has a lot of demands on his shoulders. Not only is he in an IB program in school where he has a lot of homework and advanced classes, he is also a caregiver for Abbie. Might as well admit it, it's why he has to tag along with his parents everywhere, why he has to hangout at home probably more than an average teen and of course he has a supporting role in the A$a $how on YouTube. If he had a job, they couldn't put as many demands on him at home, Asa can't have that, he's gotta be in control. Isaiah's gotta be constantly alert and ready to sprint to get Abbie in case she runs off because Lawd knows Humpty and Dumpty can't catch her.
Look, when they go to carnivals, teens are everywhere with their friends hanging out while he has to walk around holding hands with his sister.
So really, he does have a job, it just SUCKS and he probably doesn't get his own wages for it
He has a good soul, one day he will be the king of his own castle and call the shots in his life. Hang in there Isaiah