2. Talk to the seller's agent. Indicate your interest in getting it closed by the end of the month.
3. If all that fails, tell them you are going to get an attorney to take legal action and that they will likely have
to pay both your and their attorney fees and all the heirs will likely get less money. Money (or loss of money) is typically a good motivator to the person holding out for more money.
4. Then follow through with the threat...get an attorney and force them to close.
Delays like this are out of your control when all you want is to buy the home. There are so many legal interpretations here that it would be virtually impossible for anyone that is not directly involved with your contract to give you any advice. I hope you have a realtor who can explain your rights as the consumer. You do not want to force a close that could have any lien issues. The title company is your best avenue for any concerns relating to title. You want to make certain you have clear title so I can appreciate the title company requiring all financials to be reconciled as this is in your best interest.
If you feel the need or desire to move forward with this transaction, consult a real estate attorney. Your title company can recomend an attorney for you. If you have invested any monies, ie.. earnest money, option fee, inspection, appraisal etc... you will want to recover anything that your contract provides for. I apologize for not being able to be more specific however, this sounds like a legal tangled web that only an expert can provide the resources you need.
Please let me know how this works out for you. I am interested from a learning experience angle to see what the outcome is after all is said and done.
Best of luck to you!