I've been with DH for 8 years, married for 2. He has 3 kids from a previous marriage, 12, 17 and 19. I've known and had good relationships with them all, especially the youngest who I've taken the lion's share of caring for when with us. He now lives with us after having serious issues with mum, causing trauma and a lot of acting out. DH works 7 days a week and doesn't do much else, freely admitting that 'this is all too much'. Older siblings are not in contact with the youngest, nor is mum. Older daughter frequently requests through mum that she doesn't want me or the younger son there when she sees her dad, causing me this weekend to sit upstairs in the bedroom while she made a family announcement to the rest of them. Mum sends DH screenshots of their group chat where they accuse me of sending them texts from the youngest's phone, all wildly untrue and unchallenged. At the moment, I'm main parent for a very emotional and hurt boy, who needs more outside input and wider family support, work 4 days a week in another job, do all the admin for DH business, all the housework, cooking, laundry, dog walking and studying for a new qualification. Nothing happens without me, and socialising or doing anything for fun is just a distant memory. Is this just step-parenthood or is this a particularly difficult gig?