Dilema-Who-Why
Hey Lav,
Normally roses is a nice gesture...but if you have had an issue with this before than I'm concerned.
I wonder if your place of employment has cameras so that whoever did this was recorded.
I would inquire about it, if there is a security staff on hand.
I would also inform the police to cover yourself. We can never be too safe.
Be aware of your surroundings at all times, and get you some " pepper spray "
Praying for you