JJ, I understand what you are saying and I agree. A "happy anniversary" card would obviously be inappropriate. But I think a bunch of pretty flowers to try to brighten her day, and a "thinking of you and Dad" card delivers the right sentiment.
Nancy- I think that what you did was a beautiful gesture of love!!! I am sure that you mom with appreciate the effort! The roses are gorgeous and the note was very thoughful!!! (I just LOVE Proflowers!!!)