Other tips:
Keep in mind, the family may still be mourning, so don't push too hard. Let them know you are there to help if they need it now or in the near future. If the person has passed recently the family is probably a little overwhelmed. So give them the time they need, but see if there is any way you can help them now.
Do they need money to bury their family member? (Fast cash closing can help if they don't have funds to take care of all the immediate expenses)
Is the house full of stuff and will they need some time to go through things. (Give a longer close time to
accommodate)
If a family member was living with them, they may need some time to find a new place to live since other Heirs are forcing the sale of the property. (do a lease back for 1-2 months at what ever rent rate you feel you need to give them to get the deal. Market rent if fair and usually works)
If you help them, they just may help you get the deal.
Warning: If there are a lot of heirs involved it will be more difficult to get the property under contract (some may feel the property is worth more, or they may want to buy it) try to talk with the executor or
family attorney, talking with other family members may get you in the door, but will delay the process.
Good luck and I hope this helps.