Puzzled

The other night I got home from a 13 hour work day but I wasn't ready to go to sleep and I didn't need any more information to go into my brain. I didn't want to read or watch tv so I started to put a puzzle together. I just wanted to look at shapes and pretty colors. When I went back to work two days later a man walked into the photo lab and asked for Alice Shaw. He was delivering a bouquet of flowers. The card read, "I hope this brightens your day!" And it did but that was it. It didn't say who they were from and I can't begin to guess who sent them. Now I have two puzzles to work on.