My girlfriend receives flowers from another guy, what should I do?

My girlfriend had surgery last week and before and after the surgery her male coworker (as far as I know they are not close friends or anything) sent her flowers. I didn't mind it at all but he sent another flower this week saying he hopes she recovers well. I asked her why he keeps sending flowers she says she was mentioning how stressful she was for the operation at work that is the reason why. It doesn't make sense at all.

My girlfriend receives flowers from another guy, what should I do?
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