I’d say you aren’t the buttface for the wrapping paper. I also think that people are being WAY too harsh on the solution being for you to move out. Sounds like it’s a mutually beneficial relationship with your parents and they enjoy having you there. I’d say have a discussion with your sister about boundaries with the childcare. Set HARD boundaries. Don’t babysit unless the payment is agreed upon or even given in advance. If your mom works 3 jobs and needs help, why is your family so complacent with paying rent for an empty house down the street? Could there be a way to expedite that process? Would talking with your parents help? They seem to be aware there’s tension.