Sometimes she has her Hair in a Bun and then she places that on top of her head to stop the Hair from falling out of it. I think it would be simpler just to use an elastic.
Lola likely knows most of these Girls that come and go. They just have certain favorites they like to be with. We know Lola gets along fine with Stella as a prior stay has shown it so she'll likely stay in B1 this time around and just run back and forth from B1 to B2 if she feels the need.