I managed to catch her again and spent time lunging her and settling her, and rebuilt the part of fence she jumped. I put out hay everywhere and tried again. She avoided the fence I had repaired/built up, but after about 5 minutes she jumped the highest part of the fence in that entire paddock! Then she galloped off my farm and out to the road and disappeared!!!

I won't bore you with the details of my mini heart attack, and will skip to the part where I got a call from a neighbour down the road to ask "is this your horse walking down the road?" She was 4 km away just a few minutes after she escaped!!
Anyway, I trailered her back and put her in one of my only two proper stalls in a Shedrow barn in another paddock. I prefer to keep new horses separate (no contact) from my others for 3-4 wks, but I had to put my Fjord next to her to settle her down. I don't intend on letting her out anytime soon as she was still upset this morning (but at least did eat her hay & pooped/peed).
The former owner then informed me that years ago she jumped out of her pasture. That would have been useful info to have beforehand! (The former owner, though, was apologetic when I told her what happened and was very supportive.)
Anyway, the question ... have any of you dealt with a horse like this before? How did you manage them on your farm? I've asked my fence guy to come and repair the hot wire/rope that she busted, and also add another 2x6 board at the top of the fence around the paddock she is now in. He'll be out on Wed or Thurs to do that. I'm not sure that will hold her in, though, because holy crap she can jump! Any other suggestions? Should I tranq her for the first few days? I do NOT want a repeat of seeing her tail gallop off down my country road!!!