Living In Worry... Is the buyer going to sue us?

Our buyer made the whole process very stressful and tedious with near constant annoyance verging on harassment. There were times I wanted to say, “just don’t buy the house.” Other times I wish I would have just backed out and started all over. This person made an issue out of everything and was looking for perfection. There were plenty of red flags appearing that they may attempt to sue us after they take possession of the house.