Jack,

I agree with Open Eyes. To even consider living with your autistic, non-verbal twin brothers after your parents pass away and keeping them in a group home only while you work was generous. Note that you need more than just a maid to look after your brothers. You need a CNA. Your mother needs to acknowledge that what you are offering is already more than what you absolutely must do.

Please keep the line of communications open with your mom. Thank her for the offer of $500 but tell her that you have misgivings. Share with her that you believe that it is outrageous that she would expect you to change your chosen career path (from artist to lawyer) in order to generate income to care for the brothers. It is your life to live. You are not at fault that the brothers were born disabled. You already plan to do what you can which is generous. Until she acknowleges that with genuine gratitude, you are not coming to her house. Stay on your message but do not cut her off.

I hope it helps.