When Mycroft (Enola's older brother) finds Enola and they ride in a carriage together, Mycroft yells at her until/while she sobs. Near the end of the movie, a young teenage boy is nearly killed by one of his older relatives.
While the school headmistress is dressing Enola, she slaps Enola. Enola and Tewkesbury run away from home to escape what their controlling guardians had planned for them. When Mycroft finds Enola and they ride in a carriage together, Mycroft yells at her until/while she sobs. Enola and Tewkesbury (both young teenagers) are physically attacked and nearly killed by adults throughout the movie. At the school, Enola is locked in her own room by the headmistress.
After Enola finds the building with gun powder in it, she fights a man there and the man is caught in an explosion in the building. He is later shown unharmed.
After Enola finds the building with gunpowder in it, a man comes up behind her in the building and waterboards her for information. She pretends to be drowned for a few moments before emerging fine.
No children die, but after Enola finds the building with gunpowder in it, a man comes up behind her in the building and waterboards her; she pretends to be drowned for a few moments before emerging fine. Additionally, adults try to kill two young teenagers throughout the movie.
Not a mental institution, but a ladies finishing school is portrayed with intense gloating and a sense of "you have silly notions, and we will BREAK them out of you."
No, but there may be triggers. I'm copy-pasting someone else's well-phrased comment to another question: "Numerous references that a teen girl needs to lose weight and/or be shaped appropriately by restrictive women's clothing. The teen in question rejects this viewpoint, except when she can use it to her own advantage."
A girl disguises herself as a boy more than once, and it works, in that it fools people. Since this is her explicit intention, I wouldn't consider it a case of harmful misgendering.
Numerous references that a teen girl needs to lose weight and/or be shaped appropriately by restrictive women's clothing. The teen in question rejects this viewpoint, except when she can use it to her own advantage.
Multiple references to women's suffrage, acknowledgement that privilege falls along gendered and racial lines, that some characters are more privileged than others, and that some people are working to maintain the current power structure.
There's some occasional small amounts of blood but no gore. Someone headbutts another character who gets a bloody nose. Enola gets some scraped up knees after a fight. In the second fight with the man in the bowler hat Enola and Tewkesbury get a few scrapes.