For several years after her retirement, she would have bad flare ups with some frequency. Now that she mostly is outside, she's doing better and rarely needs medication. Recently, due to our very cold temperatures and constant wind, she's been inside more than I would like. So last night she went into the paddock to have her dinner when the horses came in from dry lot. I was doing some other things and, after a while, stuck my head out the barn door to check on her. She was standing at the gate of her paddock pushing on the gate with her chest and nosing at the gate latch. As soon as she saw me she called loudly and started running up and down the fence line.
I went up to check on her and discovered that she was blowing hard and completely soaking wet under her blanket with sweat - she must have been running for a while and the skid marks in the mud of the paddock would confirm this. She had to come inside since I couldn't leave her wet and unblanketed, nor could I leave the blanket on. So to give her a moment to calm herself down, I put on her halter and led her back up to her pile of hay. We stood there for a while until she started grabbing mouthfuls of hay. I then led her back to the barn - she was very "up" but was able to hold it together until we got to the barn, without doing what we call "losing her mind" - which Lily can easily do. She clearly wanted to bolt but responded when I asked her to slow or stop.
She is probably a little herd-bound from being inside so much with the other horses. We'll keep working at it and soon she'll be comfortable in her paddock again.