The great bouquet mystery

I decided to use the restroom before I left work today (I know, great start to a story, right?) When I came back to the office to grab my purse and computer this was sitting on the counter:

What wasn't included in the bouquet was a card or note indicating where they came from, who they're for and who's responsible.

I'd like to assume they're for me, considering it's my birthday on Monday and all and were I to pick a bouquet of flowers this is the exact bouquet I would pick out for myself. However my officemate took the day off from work because he was likely going to have to put his poor sick doggie to sleep. His wife works in the same building, and I have a hunch she might be responsible.

Not to mention I called the party most likely to send flowers to my office: my mother, who once sent a three-foot tall plant to work just so people would ask enough questions to discover it was my birthday. She denied any involvement. The Modern Beau is out too; he's not one to have flowers sent when he can pick them up himself at Kroger.

I think I'm going to just pretend I have a secret admirer.