I just joined and perhaps this reply is abit too late but it is interesting to find young children getting sexually aware at an earlier age. Older girls do have very strong influence over the younger ones . I remembered older cousins (teens) staying with me and they were always giggling about boys, discussing about their menses and shooed me out whenever I became curious. That made me even more curious. I am so glad to hear that your little girl has friends and the plus point is that you know what is happening. I think the best is bring her awareness about different types of expressions of love and certain expressions are only for adults. It’s our reacion that usually bring out sensations. Encourage her to keep coming back to you and can talk about anything under the sun. God Bless!