I gave up work in January to look after my dad he's 89 he has mixed type dementia. He seems to getting worse quickly. My mum really isn't coping that's really why I gave up work, she's physically well but I feel like I'm caring g for both of them and that she's giving g up.Some days Dad is so angry and violent he attacks my mum.Im so worried she won't except any outside help or advice.I don't know what to do?