We have a mini mare here that lived with her stallion for almost a year. One day we let her out and she walks right up to the big boy and flirts with him in a big way. The whole squat, pee, come here handsome posture. So later she goes back in with her stallion and its ears flat and back off buddy! Take her out a few days later and she is right back there flirting.

She should have been pregnant. I saw her being covered and she had been living with the stallion all that time.

Seeing a mare with 2 backs doesn't mean anything for sure but a well humped stallion. :)