Thank you.
I tried to ring their father, no reply (they have caller display)
I've text twice to ask her father if we can have a conversation about the alcohol. No reply.
Funny that cause it's not like he was not around because my youngest rung him yesterday over other stuff.
I had a big chat on the phone to my sis-in-law (exs sister) who knows only to well what her brother is like & has nothing to do with him but who also raised her grandchild well & had similar scenarios when her own son encouraged partys, tattoos & alcohol.
Was good to get some of my pressure out & have some support.
She suggested I try to find out some more about this party ahead of time so at least I have something to go on.
I've asked my daughter to find out more.
Thank you all so much for your help, I really don't have a lot of support.