Hearts mechanic, spread 9. When you get a heart, does that mean you have one more heart to give?
That would interact weirdly with:
"To get out of it you must share a secret or give them your heart as well."
They give you a heart, you heal up 10, you give them a heart, you're
now ±0 hearts and up 10 Stress.
I get that the "they give you a heart" part is the difficult part, but
then you can easily get out of it.