Dear Barbara and Blossom
Thank you som much for your replies

.
Well, first she left the foal alone in the stable to cover the mare in a paddock

, it didn't work out as the mare and foal naturally got scared and frustrated, so she let the foal loose in the same paddock with the mare and stallion

and asked if I would hold the mare. I had to leave...didn't want anything to do with it!!
I've just covered one of my mares in the paddock with a third part to hold the foal so mare and foal still have contact, but no danger for any of them, but she insisted in doing it her cruel way!
Thank's again
Gitte