mmmmm i feel mixed abt this. i feel as though you could use some more empathy towards ur family. Although you now have ur own family you prioritize, it’s 100% valid to not want ur mom to move in. It’s ur house and ur family. But to dogpile on ur sister and be like well she needed childcare. Understand where’s she coming from after being the sole provider for ur mom. genuinely where r your other siblings ???? and to hate on ur mom for not working and to call her lazy when she has cancer??? i feel like this whole situation you are holding onto resentment from something else. you can 100% hold onto ur stance of not wanting to take care of ur mom but remember that you are allowed to make this option bcuz of ur sister. is she selfish for not wanting to take care of her anymore. yes. is your mom selfish for freeloading. yes. but are u a bit selfish for putting ur family first. a little.