This actually happened in a childrens cartoon if you want an example!
Tangled Series, a continuation of the movies.
In the series, there's this one episode where Rapunzel and Flynn/Eugene have an argument after a betrayal of another friend of theirs. He wants to move the friends stuff out and move on and tells Raps to move on. Rapunzel insists you don't give up on friends, and they fight about it. Later in the episode, Rapunzel ended up accidentally going back in time whre she met young Eugene and his friend Lance in a thievary. Lance gets caught and Eugne abandons him. Rapunzel convinces young Eugene to go back and insists you don't leave friends. This has an unattended side effect when she gets back to the present and Eugene tells her you don't abandon friends and suddenly is 'brainwashed' to her viewpoint, from the beginning of the episode.
Fans were pissed. As Rapunzel is supposed to be the protagonist that can do nothing wrong, pure of heart, and hero. But she changed someones mind to where she was right, by messing with the past
This was the most purehearted protag, with the most loving trusting relationship in kids cartoons as of recent years. But Disney showed even pure-hearted, loving, trusting can do no wrong Rapunzel could desire to be right, over not indoctrinating her husband.