What words you call a person that is being mean and cruel, and inciditate?

have a granddaughter who is not including any of her family to help and be in the wedding. She has 2 sisters 17 & 13, a brother 9. Told them flat out they were not going to be in HER wedding. I as her grandmother/grandfather offer to pay for the cake. She told her mother, not me that she wanted to pick out her cake. She got engaged at Disney World in front of the castle. So I have started buy items with the Disney Princess wedding theme. She told her mother that she did know feel bad if she did not like whate I bought. So far I have spent over $800 on nice Disney castle items. She has really hurt my feeling and that of her own family