Several months ago we bought a horse for our daughter. We had her boarded until our fence was up. Two weeks ago we brought her home. While she was boarded, she was turned out at night with three other mares and a gelding. She had a few skirmishes with the mares at first, but had no problems with the gelding. She is wonderful with people and the barn owner said she settled down with the other mares after a couple of days, although I still saw some ear pinning from them when walking her past them in their stalls. Last Tuesday we bought a gelding for me. The mare is not being nice at all to him. It's not bad out in the field as long as he stays far enough away from her, but when they come up for feeding time (they are fed in separate stalls), she gets aggressive towards him and chases him off and sometimes kicks at him. A couple of days ago, he kicked back and got her in the chest. Normally he just runs away. She left him alone the rest of that day, but went right back at him the next day. None of the aggression is aimed at people, but if someone got in the way.... Even in the stalls, she rushes at him and sometimes kicks the wall between them. When I turn them loose after feeding, she chases him again. I know it can take some time for horses to work things out, but I'm not seeing much improvement here and I'm starting to worry. Any advice?