My mum is in a care home and needs a next of kin and been told it has to be one of her kids but none of us can make up our mind who as 2 of her kids were adopted n the other 4 were brought up in care so we're alloa unsure who would be best or has the most responsibility to her
Find out what the duties/role of the "next of kin" are. If it basically involves being a contact person, you could roll some dice and decide. If it is more than that, then try to figure out what your mother would be most comfortable with. Can she tell you?