Anyway, it was a lovely gesture...or, for those in the know, a sarcastic dig, as in "Good luck, sucker; it's not as easy as it looks." Though I suppose it's an entirely different thing to "write" a memoir than it is to actually write a memoir.
So let's go with choice (a) Mrs. Obama is a gracious lady.
She could have even wrapped the present up with Aretha's hat on top! Don't you love that fabulous hat?