Severus
How about this: I will start coming by in the daytime whilst you are at work. I will make sure that Bronte is looked after and will try to get Louisa to engage with her. I will also babysit Bronte when you want me to at the weekends so that the two of you can go out and do whatever it is that you enjoy doing together. Bookstores or whatever. Try and get her interested in books for Bronte. And I will get Ben to pop in and check on her every now and then. Sometimes he can cheer her up.