Have you asked if she wants to play? Maybe she's bored. At 6 you can give her more activities that engage her to think such as Nomenclature cards, story writing, culture study and so on there are great free downloadable materials on
http://www.montessoriforeveryone.com...s_ep_60-1.html
If you hover over her and tell her what to do you are intimidating her. Through force we remove their choice and therefore their self esteem and ability to make commitments. Give her a choice would you like to play or write a story.
Conflict is an opportunity to teach. If she's telling on someone take the opportunity to talk as a community about what happened.