What's going on here?
Since about Friday, my mare has been very...off. Very restless, very high-strung and reactive, quite jumpy, and just generally out there. Normally, she's calm, quiet, relaxed and you could light a firecracker nearby and she would -maybe- consider reacting. Friday also just happened to be the day where this cold front moved in, bringing wind, rain and bitter cold. I noticed on Saturday too that she was in heat (winking, peeing, etc).
I know a large part of her behaviour was because I myself was angry and frustrated with her for being such a tool, and also because I was not in any mood to work with difficult horses in such weather but did anyways. Today, however, I went out quiet, calm and in a -somewhat- good mood, and though she wasn't as bad as she was all weekend, she was still much more restless, jittery and unfocused than I'm used to. Part of me wonders if she's still just in flight sort of mode over our bad experiences this weekend, and another part wonders if there's legitimately something wrong.
Health wise, I think she's ok. She is way overdue for a worming so is in poor condition that way, but otherwise, I can't think of anything that might be setting her off, especially because I haven't rode her for several weeks-all I'm doing is walking her.
What could be the matter?