I saw a lady who sheltered four airmen near Orleans during WWII. Unfortunately she did not get any RCAF men in her house (they were all USAAF). However I asked her a few questions about the water. She said that there was plenty of water near Chateaudun, but nobody would think about offering "just" water to guests. The farmer mentality assumed that wine would do a man "good" and that water was for the cows.
Regarding Jacqueline, I assume she has a different surname, so I rely on the answer from Veteran Associations to find her.
When I have time I will translate more letters for you.

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