She would have far more empathy for you if she had any idea what you were going through. This insipid "Maybe you should be in the hospital" stigmatizes your need for treatment and uses the hospital as a threat and a dismissal. "Well then maybe you shouldn't be making life plans"? Thanks for the support, mom. WTF? Forgive them their ignorance but your illness is indeed potentially life-altering, and if your mom and your sister fully appreciated that then they wouldn't risk needlessly triggering you with the live-in boyfriend stressing you out. Next time your mom suggests that you be banished (to the hospital), you could suggest that you would need to be in a hospital only if you were triggered into full-blown mania by a severe stressor, like a prolonged period of inappropriate and invasive sleepovers. The transition from home to hospital is not always according to plan and doesn't necessarily leave others unscathed.