Give her what she wants. She'll do it anyway. Who knows what she is expecting from you, but being friendly and focused on your life, is probably not one of them.
Don't text her on things like the dog she loved dying. It is one of those things she would find out eventually, and if she complains that you didn't let her know, tell her that she asked for space and want out of the M, so you were respecting her wishes. It will drive home that she will be out of your life if she keeps on the course. Also, it may have reminded her that she wanted to file and alert you, and that might have slipped a bit had you not contacted. You want the time, so give her the space and avoid initiating contact.
On dealing with Friday, just take it as something not unexpected, keep detached, but friendly. Think of her as a not-too-close friend. Focus on your GAL, and you will likely surprise her with how well you are handling this and that you aren't fighting her escape. Best way to get her thinking about what she is doing and the implications.
Good luck.
Me: 50 W:43 S6, S3 M: 12 yrs. T: 17 M is bad & Not happy Bomb Mar '14 S 5 Feb '15 D Bomb 13 Apr '15 (but "no hurry") DB Coach May '15 Wants proceed on D Aug '15 Starting 1-on-1 negotiations Sept '15
