Will the Bank Postpone with Proof of Funds?

A seller responded to one of my direct mail gadgets today with a foreclosure sales date of Tuesday 02.22.05 (no time I know). An attorney knocked on her door today and wants to buy the house also. She says she will not commit to the attorney without allowing me to counter his offer.

My question is since time is so short will the bank give more time to close if we show proof of funds?

Numbers:

ARV: $180k plus
Repairs: Under $10k
Asking Price: $80k