As a person living with her parents, this idea is really akward.
I don't love my family much but I still love them.
I don't want to let them think something bad happened to me.
I would like to move to the UK due if I ever get a work permit.
But still stay in contact with my friends, the close ones who knows everything about me, they are my friends for good reasons

You don't need to fake your death, change the IDs, look, move away.