I thought you decided to file,
if you don't file but you told her you were going to file for divorce today, she called your bluff and guess what, she won.

Stop following her, stop tracking her,
she doesn't want to be with you,
you don't want someone who doesn't want to be with you.

You are totally chasing her, pursuing her and she'll never have those feelings for you until you start moving in the opposite direction.

Who cares what she has scheduled for tomorrow.

Seriously if you're miffed about you having to take care of the kids 24/7, tell her you have plans for tomorrow and unfortunately she is going to have to come up with some way of taking care of the kids, it's ok, you're allowed, she's been doing it to you all this time, you can do it to her and let her handle the pressure of being a parent and juggling work and parenting.

Otherwise just take care of yourself and the kids and let her go wherever she wants to go, if she's going out to some hotel tomorrow to shag some other guy, if you follow her what's going to happen? You'll beat him up and possibly her too and then what, go to jail, have a record, not be able to have custody of the kids, etc.

Let her go, she wants out so badly, open the door for her and point her in the direction of her freedom with a big smile on your face.