Granite... Remember what your T said...stand up for yourself... It doesn't have to be done directly with the Mother...

Stand up for yourself with your own thoughts....say to yourself... I cannot make anyone do or feel anything it is their choice I cannot control them...

That is true whether it is someone's happiness or horribleness so then you are not the cause of her horribleness she is choosing that!

Don't let these thought drag you down that rabbitt hole! When is your return flight home?