dorinda not intviting sonja

i am watching rhony for the first time. i‘m at s9e3 where dorinda is at Luann‘s in Sag Harbor and she makes fun of Sonja still being sad/mad about being the only one who wasn’t invited to the Berkshires (and never getting an apology). Am i the only one who thinks she behaves incredibly mean? In my opinion Sonja has a completly normal reaction to being excluded from her long term friend group because of someone new to the group…and never getting an apology!!