Unwelcome Visitor U/D I no longer have a threesome.

That sounds the best option. At least Hollie can enjoy her time with a hunbun of her own and not being bullied by Rosie. They all seem so sweet and what and then just turn because of gender matters. Reminds me of some human behaviour too.  
Can you vist Hollie if she lives with Louise?

I so hope this sorts itself out for you and the buns love, it sounds as if you are getting there.

Hugs
JO xx