(2/2) (Basically she’s stuck in an “And I Must Scream” situation the majority of the time.) The few times she does regain control of her body, she doesn’t commit crimes. In fact, she tries to fix things as best as she can; however, she realizes that this is futile, as “her” crimes were too great. Would “her” actions be stereotypical, considering that she has no personal agency the majority of the time? (I should also say that I am Hispanic. The comic is supposed to have a theme of hopelessness.)
Hispanic Character Possessed/without Personal Agency
I think this could unconsciously be taken by ignorant people as a, “see, they can’t help themselves" like a metaphor to empower the stereotype.
We all can relate to hopelessness and helplessness, of course, and depending on what your goals are with your comic her helplessness could be metaphorical commentary on some real world situation(s) you’d like to weigh in on in order to draw in the viewers you want to give a relatable story to, and so your idea carries a lot of potential.
If this ends as an overcoming-the-beast arc, then I don’t personally see a problem with the idea of a Latina being possessed by some force, made to do horrible things, then triumphing over it.
If this ends as a all-is-hopelessness arc, then I would agree with Alice that it may harmfully reinforce to some people that POC “can’t help themselves.”
Whatever the arc, whatever her actions are, if they coincide with stereotypical behavior (if they reinforce the spicy Latina trope, for example) I would definitely re-write them. We don’t need more of the stereotypical situations to pile on and re-inforce their portrayals. There is virtually no event that must go specifically one, certain way in order to make sure that the story’s theme, plot points, and character motivations go as planned.
Ultimately, the decision is yours because the Writing Police aren’t going to kick in your window and whisk you away, but if it is a tragedy and intended to end without her overcoming, then I do recommend you do not write her as an ethnicity which has been burdened with that “they refuse to help themselves!” stigma which I have heard over and over again particularly about Latinos. That does knock out quite a lot of options, but if your goal in writing a Latina character is to give readers relatable and/or positive representation, then a dark arc like never overcoming the Beast does not necessarily have a lot of potential in that regard.
P.S. Also see here to learn differences between Hispanic vs. Latinx/ista as well as here for some preferences regarding determining ethnicity of such characters.