Mae's heart was practically beating out of her chest. She had a lot of love for Ryu, but it could be said that among his wives, her actual faith in him was probably the lowest. This wasn't about a matter of trust, but rather an understanding of how he did things, how he reacted in complex situations, and what kind of strength he could tap into when his back was against the wall.
Of all his wives, the one who probably had the greatest utmost trust in him actually wasn't who one might expect. If Ryu was asked this question, his response would be Yaana without a shadow of a doubt. Or more accurately, a Yaana who had awakened her memories of her first life.
The person who had seen Ryu accomplish the most heaven defying acts wasn't Ailsa who had followed him from almost the beginning of his cultivation journey, but rather Yaana who had protected him in secret for hundreds of years.