Sister's Trust Master reward is the Saint's Gaunlet.
Entries for different versions of Sister.3★ - No. 1595: A woman who resides in the town of Relaks. Although young, she is respected as the wisest person in the village, with the villagers asking for her advice on several occasions. Unusual for a citizen of Aldore, she is ever troubled by the persecution of Hess, and looks to Hess' restoration as an opportunity to leave on a voyage mourning the victims of the past.4★ - No. 1596: A woman who effortlessly wields a large mace. While her ability with it is quite polished, she only learned it for self-defense purposes and has never fought someone of her own accord. She tries to solve problems through communication whenever possible, but arguing with her often leads to others blowing their top and resorting to violence.5★ - No. 1597: A prominent intellectual with a progressive way of thinking. She enjoys debates not for the purpose of defeating others, but in hopes of expressing opinions so as to come to the best conclusion. That is to say, others tend to avoid arguing with her, so although she appears calm, she is actually delighted that Scartio has begun to open up about his opinions in order to debate with her.
Sister's stats at her highest levels are as follows (with no passive abilities taken into account), along with the maximum amount of stat points that can be increased through pot-enhancements:
Sister can equip the following weapons: Dagger, Sword, Staff, Bow, Spear, Whip, Mace
She can equip the following armor: Light Shield, Hat, Helm, Clothes, Light Armor
She can equip accessories.