I believe if there was actually substantial equity in the property, any likely heirs or even their parent (the daughter) would have moved heaven and earth to save it from foreclosure.
It’s also possible that Medi-Cal liens ate up whatever equity was remaining after the TD loan(s). If the Notice of Sale which was presumably prepared in the last month is still in the name of the decedent, then I do not believe a your decedent’s “will” was ever probated as any competent attorney probating that estate would have first sent the lender(s) a death certificate, filed the death certificate in the county recorder, filed a change of ownership form with the county assessor and also could have gotten a court order to stay the sale.
If the decedent had a “trust,” are you certain that the property was placed in it?
Legal title appears to still be in the name of the decedent so that is all the trustee had to go by when preparing the Notice of Sale.