Thank you Mr. Scott for that hint
I noticed in the Magician Scathach tells Sophie that after she got disowned by her family they didn't speak for a millennium.
But when her family got in trouble and needs her help, she apparently saved or aided them. But Scathach is still afraid that her family still consider her an embarrassment.
In the preview for the Necromancer you can tell that Aoife is a kinda ticked off when the twins mistake her for Scathach.
Scathach's family was in her debt for saving or aiding them, now that she is lost it is time for her famiyt to repay that debt by getting her back.
any other ideas