I inherited property equally as stated on will of parents along with two siblings. One sibling who is executor said she is selling to highest offer and does not need my consent. I told her the estate is in probate and I will object to the sale, and I offer to buyout the other heirs their share. But I said I will pay the fair market value, not their listing price. I further stated the high offers will be lowered or cancelled after the buyer does inspection. Sibling insists she is selling "as is" and can go to closing with a buyer without my signing or going to Probate Court. How can I buyout their shares at a price after making concessions for necessary work on the house. I had sent a letter of intent to purchase to the estate attorney, but I did not state a purchase price.