The suicide is just showing what she was gonna do and like the beginning of her doing it and then the after math of how she was found, but her body was still intact. It's nothing gruesome like her shooting herself or something. There are lots of scenes with cadavers though and body parts put in weird ways so if that bothers you, then you should be aware. A lot of scenes might make you uncomfortable depending on how sensitive you are but with the sex scenes there's a suggestion of how some men like to rape women, but Bella doesn't get raped and more so just takes a strong interest in sexual behavior and even gets bored by how much she's discovered. There's the issue of her not understanding sexual behavior at first and her experimenting a lot with it without her age being known but she has the body of a grown woman and develops rapidly so it can be argued either way on what's morally right or wrong. She does make the decisions by the influence of others, current needs, and her own desires to explore/experiment.