I popped round to my daughter's friend's house, knowing it was her 9th birthday in the next few days. Admittedly I didn't phone to see if they were in, but walked round there with her birthday present, my two dc's in two.
Rang the bell + no reply, was about to go when my daughter rang it again, hoping to see her friend. (They don't spend all their time together, but we all know each other + always remember birthdays).
My friend did then come to the door with the phone to her ear, broke off her phone conversation briefly to thank me for the present, a bit of small talk passed between us + then she said she'd catch up with me soon. There were no sign of her dc's + she didn't explain where they were. She wasn't exactly rude, just seemed rushed as normally she'd invite us in. My two seemed quite disappointed on the way home, not having seen their friends.
Would you think something was wrong, or just take it that she was busy? Very unlike her!