Rude or not rude?

We held a big NYE party at our house. We supplied all meat and salads for tea and then breakfast the next morning and we also supplied the drinks. We gave out a few boxes of chocolate and lollies to share.
We asked that guests bring nibbles (and only a few did). One friend bought strawberries and we popped them in the fridge as it was a warm day. We accidentally forgot to take them out to share. 
When she was leaving, she asked for them back. I'm not concerned but it started a convo with other friends that this is actually quite rude. What are your thoughts?

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