Theory behind Kindred's Bow, Arrow, and Marks

I was just thinking a lot, and it's got me thinking (....ok no duh XD). Is there a special relation behind her marks and her arrow? Like have you ever wondered why is it that each time she kills a mark she becomes stronger? there hasn't really been much answers on that in specifically on WHY she gets stronger, and her lore itself just says she wanders around runterra searching for people who are about to die and all. But here's my theory.

In the lore, when kindred meets up with someone who is "about to meet their fate" they are left with 2 options. 1) Run away and escape, only to be chased down by wolf, or 2) Willingly accept their death and get striked down by Lambs arrow?

WHAT IF, the arrow itself, was the souls of all the ones who were willing to accept their death and got striked down by Lambs arrow? and if you look at the login screen when she was first released, her arrows are not solid, but faded and ghost like, with some kind of swirl going around it. Could this also prove that inside each of kindred's arrow is a army of people who were willing to die to her arrow, hence why she gets stronger with each hunt? the more souls that are collected, the more powerful it becomes. "together we are one" "together we are strong" Much like how the more souls thresh collects, the more AP and armor(or mag resist idk i dont play him XD) he gets. so could that be a SIMILAR concept with kindred?

Those who are willingly accept their life shall become one with them and be with them to depart in peace with death themselves, only to make their legend stronger.