Daughters bad behavior

Need a little advice. 13 year old daughter used social media in VERY inappropriate ways. Before this we had told her she wasn't allowed to use them but got accounts and hid them from us. We found out about them and due to her usage police were involved for a short period of time yet she has still not learned what she did was bad. We have grounded her and taken away all electronic devices but now we have a new deliemma. We are unsure if she should be involved in Easter fun activities. She has only been grounded for about 5 days at this point but is it wrong to not let her join us for fun to help her understand the seriousness of her offenses? Takes a village to raise a teen so I could definitely use the advice.