Preforeclosure negtionations advice?

[Eron A.]

FACTS:
- home has been in preforeclosure for about 10mos, and currently still is...and bank seems like they will give more time if i come up w/a plan.
- mortgage note is worth $70K, 7.3% rate, ~$600/mo
- ARV on house is ~$115-125K
- 3 heirs on title of house, and not sure if house went thru probate. house shows original owners on county tax site. 1 heir doesnt even have authorization to speak to the bank, b/c she was trying to give me authorization. now shes trying to get death certificates faxed, birth certificates faxed, etc so she can get authorization so she can give me authorization!

i know the bank is into making money, but what do you think the odds that the bank would let me grab it from them for $35K? seems this could work if it would help them save money. i originally thought, "ok, bank has made their money more than a few times over so they would be happy to let me simply pay off the mortgage for a discount," but actually i think its more about how much money they have to lose in the future....by going thru foreclosure process.

QUESTION: how should i approach this? is 50% off too much to ask? are banks usually open to payoffs like this one? blessings of your good thoughts and advice would be appreciated. thx!!!