If it was placed on the record, yes (and you would want to get the transcript). If not, then its a gray area.

Unless the message(s) are threatening, no. You should just ignore her and/or block her (assuming you have no minor children together).

If you are looking to modify you can try to file the modification in the county you live in now, and when you do so, you would attach the current...

Depending on when your final hearing is set for, you can try to file a motion for a new PL hearing due to the new change, but unless the final...

That in and alone would like not be enough. However you should inquire with the other parent why they did not tell you about this.

No. Only parties to the case participate in mediation no other parties/people.

You can try, but you may end up with the same results as you did last time you filed.

If this weekend is not your weekend, but Monday is your holiday, then you would get the child at 9 am (from the information you provided above).

You can, however, if she hasn't tried to see the child, why rock the boat and do anything?

You should try to address this with the other parent. If not successful, it may be time to file to modify custody.