Anonymous wrote:For heaven's sake. They are in 1st grade. What could the trouble actually be??? Even if the new girl was a B*tch at school, she'd probably get along just fine with your daughter in a one-on-one situation.
Seriously, I wouldn't change plans on a 1st grader's unspecified whim. They can make nice (and probably will have a lovely time) b/c they just aren't that advanced socially -- wait until 3rd grade and beyond when kids are at very different speeds.
Things can be very different when it's a one-on-one situation and there isn't any "competition" for attention like there is at school.
Keep the invitation. You made it, you keep it unless you're sick.
+1. OP, I cannot imagine anything seriously wrong with this child that should cause your daughter to hesitate to interact. My fear would be, if she is the outgoing popular kid, is she already worrying about what others will think if she befriends this new child, who may not yet be part of the clique? And I hope you agree that it would be absolutely wrong to allow her to cancel the play date if that is the case.