Hi all.
Well I talked to my friend again this morning. Her DD doesn't actually suck on her hair anymore, its just the twirling & pulling.
I said to maybe tell her her hair would turn blue, but she agreed that it probably wouldn't make a difference. She might give it a go though!
She was already talking about taking her to a paediatritian about that & her being a bit of a bully & extremely loud, so I did suggest maybe a child psycologist.
She is holding off on that for now as they are living in Brissy ATM, but are moving back to where her family is (same place I'm moving to). So she's hoping once they are there & are all less stressed it'll settle.
Thanks again for all the ideas & info.