Hopefully she'll be in touch now since she has to have got at least one of your messages
. If she still doesnt respond within a few more days , then you could send her an *Urgent response required* PM to get her attention, and then if she hasnt worked things out with you, as a last resort you can post her name here. I hope it wont come to that of course . I know real life can get in the way for all of us sometimes,as can the holiday post, but this is a ready made custom -all it needs is posting, (and the holiday mail issues should be over by now). Over 3 months is a long time to wait for that.
If she still hasnt posted, and she cant post your pony now for whatever reason, then she should let you know that and refund your money