Maybe the reason to stick around shouldn't be 'because who will look after mum otherwise' @Snowie my good gosh. You deserve to have your own life hun!!
'Who will look after her?' Bah! Not your question to answer! Someone will. There's a whole dang soceity out here, you are NOT the 'only person in the whole universe' who can look after her. You have a lot more worth, more value to the world, than just being 'carer for mum'.
Sigh. Hugs your way deary. May things shift soon 🤞🫂