The Familiar of Zero

The Familiar of Zero (Japanese: ゼロの使い魔 Hepburn: Zero no Tsukaima) is a fantasy and comedy-oriented series of Japanese light novels written by Noboru Yamaguchi, with illustrations by Eiji Usatsuka. Between 2006 and 2012, the series was adapted by J.C.Staff into four anime television series and an additional original video animation episode.

The story features several characters from the second year class of a magic academy in a fictional magical world with the main characters being the inept mage Louise and her familiar from Earth, Saito Hiraga.

Louise's Marriage (Season 1, Episode 11)
Louise refuses the marriage, but one of Wardes' allies, Cromwell, arrives with the Water Spirit's ring and forces her to consent using mind-control. The marriage proceeds with Wales officiating, and is nearly complete when Saito bursts into the church and snaps Louise out of her trance.

Slepnir Ball (Season 3, Episode 7)
Louise is confronted by Sheffeld and allows herself to be hypnotized only to be freed by Saito.