I wonder if she really is going to remember everything. Shien seems to think the issue is rather casual for her magic to fix. But this chapter cuts us off before she does anything.
I want to say whatever her trauma is though, if she does get her memory back, I find it hard to imagine its worse than what she has now. She's cursed by her lack of memory, to the point of endlessly earning money for reasons she knows not. She's well aware that she's been driven into an insane obsession that doesn't even benefit her, because she doesn't have any desire to spend the money for herself. She's literally smoking her own cig stubs and is homeless. And she's probably been doing it for centuries.
On a related note, it's quite hard to tell how much money she's stashed away but it really is a mind-boggling amount. Based on previous chapters as well as this one, the coins consist mostly of 100 yen and 500 yen ones. There's no way to tell how deep or large the pool actually is and so how many coins there are...they can stand up to their hips but another panel shows the coins piled high enough to show at an angle to the water surface. They did seem to walk a considerable distance to the water edge though.
Some napkin math would be...let's say the pool is some 6m by 2m. Coins are piled on average 3~4cm deep (both types of coins are between 1.6~1.9 mm thick). Let's ignore the fact that the pool clearly gets shallower at the edge. That gives us somewhere between half a million to maybe 800,000 coins, depending on the ratio between the denominations. Or somewhere between 100 million or 200 million plus in yen.
I'm sure someone can do a better calc (or use AI for this, though I take a dim view of overusing a chatbot to think for you), plus we lack a lot of information, and maybe more importantly, nothing in this manga should be taken physically literally, but the point is it's an incredible amount of money....albeit it's technically possible on her minimum wage equivalent jobs and brutal work hours. Maybe 50~60 years of non-stop zero break 'part-time' work. Good thing she has several lifetimes eh.
Oh yeah, I also haven't counted her tent. And she's got yen bills in there, tons of them, since she can't store them in the pool.