I think that if it did hapen where they just walked away from her and didn't want to play, that she would shrug it off and just find someone else to play with, she just seems like that kind of child to me kwim? I don't think it would phase her too much. It makes it so much easier if you have a child that can make friends anywhere she goes because it can make the transition to school so much easier not to mention that she will be able to function and not be 'lost' if her friend isn't at kindy one day kwim? My DD1 is like your DD - had heaps of friends and wasn't stuck to one or two other girls and is still like that - just flits from group to group and everyday she has played with someone different at school. DD2 on the other hand is a 'one friend child' and she and her bestie at preschool are inseperable which is great that she has a close friendship BUT they are going to different schools next year and DD2 is already upset that her friend wont be going to school with her and doesn't really understand why they can't go to the same school (we go public, her friend will go to the Catholic school) and when I tell her all the other girls from preschool who will go to school with her she says "but I'm not friends with them" so I think she will struggle a lot at first finding a new circle of friends.