i have a mare at home awaiting a pending approval and the shipping says that shes in shipping home , lol , either she hopped a train and tried to get to him herself or there is a bug sending her from one shed to another at my stable. lol. just a heads up in case its happened to anyone else i let Shanthi know in pm also.
Did you post it to the bug system? 
i can never find that section for some reason
Under game links it says view/report bugs.
ty