Oh, I see now. The aunt knows that the door she let slam spooked the horse, and that's why she lied. Thanks for the clarification. (I'd thought maybe your aunt hit you...)
Yeah, there have been a few incidents within my own extended family that were "questionable".
Part of me doesn't blame her.
Not only was she my aunt, she was my god-mother and my dad's favorite sister.
I think my dad would've killed her, had he known, at worst and at best, she knew he'd disown for her for life.
As it was, not only did I get the near-fatal injury, I got the insult of the blame and guilt for "making it happen".
My sympathy to you for the "questionable" incidents.
I don't think anything cuts as deep as a betrayal by family.