Hmmmmmm, I wonder what it is about your home that makes her feel insecure??? Has something bad happened to her in your home that would make her feel unsafe? Maybe you could try walkie talkies? Sounds a bit daft but maybe if you kept talking to her and she could hear you when you are not in the room with her it might make be feel better. Does she cry when your DH is with her and you go and do something else or is it just when you are alone at home with her?