Dear Sara:
I would like to take this opportunity to that you for the kindness and concern you showed me with your visit the other day.
Without a wonderful friend like you to spend time with me and help bring perspective to the situation the time I spent studying would have been interminable. I especially appreciated the diversions that you provided allowing me to take momentary respite from the enormity of the task set out before me. You would not believe what a relief it was to be able to breathe and remember what it is like to live in the moment.
I would also like to extend my apologies for being so distracted during your visit. I promise to invite you over once this whole Corbin situation is resolved and at that time you will find me to be a more cordial host. We could even take that opportunity to discuss the improvements you have made to your yacht and how they are working out for you.
Sincerely,
Mathias