I am having this same problem my daughter is 7 yet this is like the 3rd incident she has had with 3 different girls her age in the last three years. Each time I told her it is wrong. I was starting to believe she may be thinking she is a lesbian at this age they already know from what I know. Not only does she kiss but she is touching them in other places. I experienced this when I was younger yet I WASN'T 5, 6, OR 7!
It is so very normal for kids to do a little experimentation. Just thank your lucky stars it is only with kissing another girl.
Do a GOOGLE search with these words "girls kissing experimentation" you will have more leads to information than you will be able to read before she is 21.
Have a great Christmas
Snooper35
Could it have been part of a truth or dare? and she didn't want to tell you what the question was that she took the dare instead of answering?
That popped in my head cause I overhead my "girls" (only have 1 child -daughter- but she has a group of friends) playing it the other night
I talked to my daughter (who is the same age) about appropriate touching and she is open about things. However, when I was a girl--my mother was not open about these types of conversations so I feared her and I feared everyone finding out (teachers, aunts, other parents) if I told her the truth.
I kissed a girl when I was about that age--we were practicing for when we would grow up--for our imaginary husbands.
I have never kissed a girl since and have never had the inclination--I think of it as silly now.
My mother made a big deal out of it--and I thought something was nasty about it for many years--until as an adult I realized that I was just a little girl kissing another little girl--like in a fairy tale--how the prince and princess kiss for happily ever after.
My daughter and I talk--and I make sure that she understands that some things are just between us. I think it might be the fear that you will have a meeting or that she will get into trouble that keeps her from telling you the truth.
It is probably just innocent.