I'm sorry for your loss. I'm sure it's a very difficult time for you and your family. I want to echo the advice from the others. Please don't make any major decisions right now.
I have a girlfriend who also recently lost her father. Her H was also not nearly as supportive as he could have / should have been. While they were not having any big difficulties in their M like those of us here she was so appalled by his behavior that she was contemplating leaving him. Her IC advised her not to make a major decision like that while dealing with the grief over the loss of her dad. Best to deal with one major life change at a time.
If you love somebody, set them free. http://tinyurl.com/2empx2g
