So what? She borrowed money to make an investment and it didn't pay off, so she has to dig in and pay it back or declare bankruptcy.
This is exactly what she signed up for when she bought an investment on leverage. What do you think would happen if you borrow money to buy stocks and they go down?
I'm not sure what point you're trying to make here that hasn't already been made in the post you're quoted? What are you saying "so what" in response to? If stocks go down you lose money... what do you think happens?
She doesn't necessarily have to declare bankruptcy yet - the point was re: selling the house at the current time might not change much w.r.t. bankrupcy.