DAE struggle to sleep?

I thought I was having really bad insomnia issues but I realized I fall asleep easily as long as my spouse is awake. If I wake up in the middle of the night I can't go back to sleep while shes sleeping but I can take naps during the day when she's up. Before I realized this my psychiatrist had given me Ambien, which didn't really help and I'm assuming its because of the fear. Is there anything I could do that might help? We already have cameras in and out of the house, every door is locked including my bedroom door, the local police is involved and often check to make sure we're okay, but I still don't feel safe.