Hi . Just looking for advice. My daughter began secondary school this year and is in a friendship group of 7 girls, who she ( and I) thought were fairly close. This week though one of the girls has announced her birthday slumber party, but not invited one of the girls . The excuse given didn't make sense , and could be easily solved if necessary. The excluded girl is gentle , and lovely and will be devastated by this. My daughter ( and I ) feel awful too. Any advice or ideas??