So to sum it up dd started sixth form in September knowing no one at all and made friends with a lovely group of 4 friends , but her chemistry class made a group chat to do with school work ( theres less then ten students in the class ) but she wasn’t included in it ( only one not to be included ), she didn't know anything about it until today .
According to two of her friends who are in her chemistry nothing ever happens in it so it doesn't matter
But is dd being unreasonable to be annoyed that it was never mentioned to her especially as her two friends knew she wasnt in the group ?