We have identified Annie as:
139211 AD IDEM ‑CHESTNUT markings: STAR, STRIPE, CONNECTED SNIP, LEFT FRONT AND LEFT HIND PASTERNS HIGHER IN BACK, RIGHT HIND SOCK, WHITE.
by Kabuki ex a Supreme Heir mare, 2nd dam by Attache
Here is an update on Annie from Monica Bretherton on her blog, Horsebytes: