Hi Sherry:

I think this letter is perfectly acceptable.  I do letters like this all the time for both my mother and my mother-in-law when they have had to take care of my kids.  To be honest with you, they have both come to expect these types of letters because it helps them.  I also give them a copy of a letter my endo gave us if we ever have to make a trip to the ER.  It tells the ER personnel his Cortef doses and what to do in an emergency.  I also give a permission letter that states that they have my permission to make medical decisions on my behalf while they are watching my children.

Best of luck to you for an easy delivery.

Kristin