Kicker-shetland

[Iwillnotbekeptdown]

Bought her last year from very nice family, she did pc etc so well ridden and they knew what they were doing, we were told she had kicked owner, who was v honest that she didn't trust her.
I took her having confidently handled her seen her worked in hand and flat I have no issues with what I was sold but after a year I just can't get mare to happily trust 2 steps forward 3 steps back she would probably love to be a field ornament but that's not doable she's now started threatening in the field. She's caught me 3 times, I don't think I can ever trust her with dcs, We can find no physical reason for this behaviour.
So I'm now considering options, my instinct is pts safest for people and I know she won't get passed around, but thinking of letting previous owners know. Makes me feel like a failure

[Cheeseburglar]

Have you had a behaviourist out to see her? Perhaps an IH Associate?

[Pixel]

Is she in a field with other, bigger ponies or horses? Our shetland used to be quite handy with her heels but we think it was because she was constantly feeling threatened, being the smallest in the field, and needed to assert herself. We moved her in with just one elderly pony and she completely stopped with the kicking (took a while before she seemed to realise she was safe). I can't remember the last time she threatened to kick and we can trust the smallest of children with her now.