YorksG
Over the hill and far awa
No it's not acceptable. You sound as if you are doing the right thing by pushing the matter.
I do agree that it is sometimes difficult to ensure horses are provided with forage to last them 18 hours, given work commitments that some owners may have. But it shouldn't be a regular thing, and there are ways around it, if she is struggling to get up there to feed.
As for it being seen as 'harrassment' of the owner, who cares, provided that you are telling the truth about the situation and are not acting maliciously. If it gets the horse's welfare dealt with then nobody can criticise you for your actions.
But the problem is, without knowing the answers to the questions I posted after the one quoted by the OP, no-one knows what the objective situation is, expecially in light of the comment about the woman being perceived as difficult, it suggests harrasment as a possibility.