Now situation nothing better than you guys.
MAD-SCL = still good.
SCL-LIM = gone.
LIM-MAD=still good.
R/T now becomes an OJ!

Worst case, if no full refund and the MAD-SCL/ LIM-MAD still good, buy a short re-position trip to LIM. (various carrier one way Y is $110-130 or use miles)
I did not call them yet! I am sure they will leave the cabin next to toilet available?