Is it your DD's birthday today? If so I hope everything has gone smoothly with her friend and she's had a lovely time.
We moved when my DD was in year 8. She changed school and soon made friends. In year 9 she invited all the girls to her 13th birthday party. They all came and to start with DD very much fitted in with the group of 8 other girls. As soon as number 9 entered the group dynamics changed considerably. All the girls moved away from DD and flocked around number 9. I can't put my finger on it but all suddenly seemed not well.
Anyway, halfway through eating their meals the girls ran to the door and left. DD had no idea what was happening. Of course I followed them. It turns out number 9 had told some older boys at school that it was DD's party and all the girls would be there, and basically, invited them down.
I managed to keep them within the vicinity and asked them all to call their parents to collect them. I called the patrents I knew and asked them to let the other parents know.
Anyway fast forward number 9 was horrid to my DD in school after that. (Presumably because she hog into trouble with her parents, for her actions?) She would not allow DD to speak to any of the other girls, who had been good friends until that party, and she excluded her from their group. DD joined another group of friends and number 9 joined that group to exclude DD from the group and so on. School were useless in helping to sort out the bullying.
DD did not want a 14th or 15th birthday get together as she had no friends to invite. On her 16th birthday she went out with her boyfriend.
DD will be 18 soon and has left school. She attends sixth form college, to get away from her school bullies.
She has made some lovely, new friends in college. However they live miles from each other. DD doesn't think they would want to come to her 18th birthday. I don't know if she is afraid of mentioning it to them, just in case she loses her friends, because of what happened at her 13th.
The teenage years are horrible. Children who have been bullied will be scarred and have little confidence. It's no wonder they put barriers up - to prevent them from being hurt.
Anyway, I hope your DD's friend turns up. She may be your DD's only guest but it will mean the world to your DD. It's a case of making your DD's birthday and increasing her confidence, somewhat. Or breaking her heart.
for you and DD