Deployed Soldier/Father needs your help

[SoldierDad]

Ok, she just responded to the e-mail I sent her about our account: You close that account and my attorney will be forced to call your chain of command Do not play games with me you will lose so go ahead and a f with the account and I you will see what happens… I will take the boys to my mother Dec 12 thru Jan 1st and see how you like it I have custody of them NOT you and I say when you can see them. And yes I can be a bitch and I will.

Ok, she has really started to get nasty. What in the world do I write back about this? I would be crushed if she took my boys to her M while I was there. I think I have made a big mistake doing this.