Long time lurker, hoping this name and post doesn't out me IRL.
There are three children (year 4) who know each other through an activity that they partake in weekly. Let's call them Anna, Sarah and Zoe. Anna and Sarah also know each other from school. Although Anna has known Zoe for the same length of time, albeit through this weekly activity rather than school. Sarah started the activity a year ago, due to Anna doing it and all three girls have since become great friends. The parents/guardians regularly take it in turns to organise a play-date for them all and will take them after the weekly activity.
Anna recently moved away from everyone, but came to visit for the Easter break. Zoe knew she'd be coming to see her at the end of the weekly activity and that they'd all be doing something together. Bought her a present and was extremely excited. Sarah's parent didn't know Anna was coming at the end of the event and found it out from Zoe's guardian. Fast forward to the activity, Anna shows up just at a point where Sarah got hurt (although it was more the shock from how it happened than anything else. She was checked over and was fine). Given time to calm down etc. and activity time finished. Whilst Zoe is putting her equipment away, Anna and Sarah go to play. Zoe goes to meet them after, for Sarah's parent to tell her that Sarah and Anna are just going to her house this week, due to Sarah hurting herself. Parent then goes on to say that her house is a tip and that's why she's not inviting Zoe, that the girls won't be doing much, there's not much point, other people in the household are ill and other general excuses etc. Basically tells Zoe that she's only inviting Anna, but sure Zoe can arrange something some other time. Despite knowing that Zoe's guardian only has her on this given day and she lives over 50 miles away all other days. Also knowing that Zoe had arranged to do stuff with Anna! Anna's parent, upon seeing Zoe's hurt came and arranged a separate event for them on a different day, where they picked her up and dropped her off from this other location.
AIBU to think this was rather rude of Sarah's parent and also extremely unfair? I'm obviously still mulling it over a week later, hence posting on here. Should Zoe's guardian have said something at the time, or the next time she sees Sarah's parent? What would you have done in this situation?
Sorry if this is long, trying to set up the back story and also trying not to drip feed.