Any real estate guru's here?

State laws may differ, but here is my take if you were in Georgia.

Assuming that your parents were the only people to have signed the promissory notes and deed to secure debt - then your credit will not be affected by a foreclosure of the property, you are not liable for the debt. On the other hand, if you and/or your sisters also signed the notes then you would be affected as you would have agreed to make the payment.

If probate is completed, ownership of the property is now in the three of you with each having an undivided 1/3 interest. If probate hasn't been completed, you might not take that last step, and just leave the property titled in your parents (estate).

You might go and talk to the local banker. If they are honest with you they might tell you something similar. In any event, if you are not liable for the loan then losing the property should not hurt your credit.

Good luck with it, sorry for your loss of your momma.
C