Grabbn dragon

Hello All, Im new to anime & started to watch a new series and I don’t remember the name. I did not save it and erase my browser history and lost it. . Hope someone can help. The story line is a woman (police/army officer) gets transport to another dimension. In that dimension she takes over the life of a princess. As a princess she was found to be the lowest type without any power. She is re-evaluated to find she has a purple aurora which is the most powerful Aurora. I hope this is enough information and someone can help.