that is a really nice theory. according to the fable in the introduction, i’m guessing lea is the woman god has chosen and bestowed the relic to so it makes sense that if she tossed it, it would find its way back to her. we have to remember that baltha is extremely devout. homie banged his head on the ground until it bled and whipped himself cus he had thoughts of a woman in front of god so i understand why he felt betrayed by lea even though it was a mistake. he’s battling with his loyalty and devoutness to god but also his feelings for lea. he’s an exceptional knight so like lea guessed, i think he was angry and betrayed but he still didn’t have the courage to actually harm lea who he loves so he missed on purpose to stop her from running.
I'm just guessing but what if she did throw the holy relic but it chose her to be the chosen woman and so to others it looked like she threw the brooch and the stick went back to her hand. I highly doubt she mistook the stick and brooch cause they would have completely different structures and textures. Idk how I feel about him charging at her for theft when not long before he was talking about how he wouldn't know what to do if she died too. although it makes sense about him missing cause the Knights were earlier talking about his exceptional skills with daggers and bows to the point they thought he was an assassin; it wouldn't make sense that he would miss let alone twice at that.