Jon S., you just bought a ticking time bomb. As you know time is not on your side. I hope the your trust deed came already as it could take up to 10 to 14 days to receive it. And i hope you recorded it. You need to ASAP. Time is of the essence.
Just because you bought a second at the trustee sale does not entitle you to a extended redemption/reinstatement period. You will need to protect your interest by doing the following:
Plan A- get a hold of the 1st lender asap. Try to reinstate the loan by paying the deficiency. See if this is acceptable. Depending on the lender they may and they do, have the right to require you to pay the complete loan off if you fall within 5 days of the trust sale.
(California civil code 2924 explains the timelines and procedure of foreclosures in CA.)
Reinstating the 1st will buy you time by stopping the foreclosure.
Plan B- if you cannot reinstate. you must get a payoff demand and pay them off immediately. This is more money but will solve your situation.
Plan C- If plans A,B fail, you will need to protect your interest by bidding at the auction. You will need to bid above the combined value of the 1st and the 2nd (that you purchased) to protect your principle.
Side Note- Any overage over the bid amount you would be entitled to. However, it will take a while to collect. ( 1 year is the longest one i have had)
Lastly, i am sure you might be concerned with the deceased aspect, however this aspect is a non issue if you present your information correctly to the 1st lender in regards to a payoff.
Hope this helps, good luck and get moving.