hi
@GrandaughterMolly
it's great of you to have stepped into the breach to support your grandad and help out your parents
but my thoughts are that this isn't sustainable, is not fair on you and is not a career ... you are ticking by but you are not starting out on your adult working life to forge a path for your future, and at 24 having finished university that is what you need to be doing
you have a right to a full time, satisfying job that will give you opportunities for training and promotion ... you need to be in a pension scheme, paying full NI contributions and settling into a place and life of your own ... ie safeguarding your own future finances and welfare
your mum clearly understands the need for full time work as she is working (I am not suggesting she shouldn't be, just personally see a little hypocrisy there) ... it's as vital to be fully employed when young as it is when later in life
you don't sound happy with the situation you have all fallen into ... you can't change how others in your family feel or what choices they wish to make; you can take charge of your own life ... start job hunting and looking for somewhere else to live ... think of ways you can help but not take on all this responsobility eg visiting a couple of evenings, doing some of the admin, if you have a car doing some transporting/shopping ... how your family then choose to organise care for your grandad is down to them
sorry if this sounds heartless ... you clearly care very much for all your family ... you are allowed to care as much for yourself