Just hanging out

Ok, I'm pretty sure someone in the fandom probably has made this theory already, but I'll be posting here anyway.

So, in chapter 125 we learn that Wolhye's relic feeds on guilt to be used and that in the hands of someone with enough remorse it can be really powerfull (considering that Snake was One-shot)

Now, we know that Wolhye recognises how the guilt that she feels about her actions fuels her Relic's power and so she does not hold it back and allows herself to feel sadness about her acts of violence, even going as far as (light spoilers for fastpass) deliberately making herself empathise with her enemies so that she may feel remorse for killing them.

Compare her now to Sayeon. Sayeon also feels a lot of guilt about her actions, both from her childhood and for her current plans. However, she buries those feelings so that they do not interfere with her plots. One of the aspects of the Godling's offer that tempts her is that her guilt would go away alongside her humanity.

Clearly there is a paralel between the two. One feels guilt and turns it into strength while the other feels it and pushes it down due to perceiving this as weakness.

Considering this, one could imagine that if Sayeon obtained the Penitence she would be able to wield it quite well. Not only that, but you could even say that it would be somewhat healing, allowing her to feel and accept her emotions and humanity, perharps it would even help her understand these concepts better.

Sayeon feels like a perfect fit for the Relic. So, considering that it was originally given as a gift from Sara and considering all that we theorize about Sara possibily having a future sight Gift, could this be all part of her plan? Did Sara give Penitence to Wolhye predicting that she would be able to wield it for long enough until her path crosses with Sayeon? Did she purposively raise her daughters in a way that Sayeon would develop all those conflicting feelings within herself, making her a perfect wilder for Penitence in the same way that she did with Wolhye?

And if so, then why? What is her final goal? Will Sayeon end up with the Relic in her hands? Will Wolhye give it to her willingly or will something else happen?

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There are so many parts in Silksong where characters mention how she is "ancient", which initially makes one think she must be hundreds of years old, but in no point in the Hollow Knight games any frame of time is used. For all we know they might have the same lifespans of bugs from our world.