There's always a settling in period when a new manager comes in. Normally at least one or two underlings think they should have at least been considered for the job, so that can cause a bit of stress. Sounds like your situation is a bit worse than that though.
Sounds good that you have other opportunities though.
Personally, I know the MAW foundation does great things for kids with cancer over here. My cousins daughter had cancer when she was about 6, and MAW did so many lovely things for her and the group of kids she was in hospital with. We are all so very grateful to MAW for making a horrendous time a little more bearable by the things they do.
I also have to give a mention to the starlight foundation. They were awesome too.