I finally decided!

So sorry to hear that! :( I'm also curious about what happened..

I went to take her out to the pasutre and she tried to kill me! She reared up when I took her halter off, she did not do this when I took her. Almost pulled my arm out of the socket

You should either contact your vet or her previous owner

If you want to train her, It wouldn't be impossible, some horses are so excited to go out to pasture, maybe you could walk her in, and out, just keep repeating until she is calm, then un-clip the lead rope/take off the halter, and if she is a cow then catch her up again and repeat the process?!

Just a suggestion...

That horse looks a lot like one that just moved into the barn next door to my moms house, I'll have to ask that horses name lol, I haven't gotten a close look(don't even know if it's a mare or gelding) but I know it's a pinto palomino lol since you live close to me it's possible it's the same horse Maybe I'll find out tomorrow

Well, if you feel unsafe that is your call - I, personally, would not make that jump based on just this one incident, though. She is a super cute girl.