Sad that some people get to the point that they wont answer their phone and return messages. Might be that she is hiding from you. Can you have a friend give her a call and see if she answers from a different number? Maybe have him schedule a time to meet her and then you go instead to confront her and get your antlers back?
My taxidermist in CA that I used for years passed away this year. I've lived in TX for 13 years now, so I don't know all the details, but was struck by wondering what happens to all the work he has sitting in his shop that he was going to do? His wife isn't capable of doing it, he worked alone. Rent on the shop is a couple grand, so she would have to pay that just to keep the doors open long enough to have everyone come get their animals. Then there is the deposit that they paid. Some of it went to tanning and forms, but she would still owe tens of thousands of dollars in refunds for work not completed. No way she has that. It just blows me away wondering what I would do if all my animals from Africa where there now and I had no way to get them back from her before the landlord locked the doors and cleaned everything out of the building.