Daughter Dearest! Oh Daughter Dearest!

In Pittsburg our daughter A awaits her plane to good ol' Charles De Gaulle, then 8.5 hours of sitting and musing over the next three weeks of France, sights, dinners, new friends and old ones too. We are anxious to have "The Voice" as we have issues with our Notaire regarding the recent sale of Dix. Just details but they leave us questioning the process. What if the buyer decides to not pay us on October the 15th as documented? What happens? I dunno, this little detail has escaped us this time through the Process. When we bought Dix we put 2 thousand Euros as a deposit towards the purchase, that was early on in the deal...when we bought the Maison Blanche Madame (the previous owner) said to us in front of the Realtor...They are serious...so no deposit was needed. So now when we have no such deposit...how does this work? We NEED "The Voice" to speak for us and find out since I now feel a bit unsure about her intentions.