I think Belle is not strong enough to fight herself back in the apartment. Strange, because the first night Milena and Belle were on fire together. And Milena (although a little drunk) seemed to fancy her. But if you compare Belle to the rest of them, she is just a child. All she does is jump around. Cute for the viewer but maybe annoying for her housemates. Let's not forget that in a house full of girls there will always be some tension or competition between them. We see them as cute or hot women, while they see eachother just as housemates who are fun and annoying at times.
But, you're right. It hurts to see her all by her own. It takes little effort to be nice to eachother. And i must that I expected a little more from Milena and Lima. I'm afraid we won't see Belle up and running again before she will leave. Too much has happend. But I hope I'm wrong.
It's weird though, that RLC seems to put the wrong girls together several times now. Belle needs two young girls to have fun with. Now she has two 'grannies' who ignore her most of the time. There is no connection.
So it's interesting to see what will happen the coming weeks. Because this way the Barca-apartments are pretty boring.