She sure moved out quickly on the apt. I find it very interesting that 1) she hadn't begun to pack; 2)she just mentioned the apt. that is across the state line; and 3)did she even "hear" you when you advised her to speak to her lawyer about the state line issue regarding custody issues?
I find it hard to believe that they had an apt. that quickly, but it's been a long time since I rented one...I just find this all very odd.
However, leave the monster at the door this weekend and enjoy your time w/your little one.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.