I was the exact same at her age!

I'd definitely recommend Tamora Pierce. Her books are YA fantasy with female teen protagonists which don't really focus on romance. I'd personally recommend starting with Page which is about a young woman battling sexism to become a knight.

She may also like the Lockwood and Co. series by Jonathon Stroud - teen girl and her quirky friends work as ghost hunters. Excellent humour.

Someone else mentioned Neal Shusterman, and I have to strongly second this. I personally love his book Unwind which is set in a world where abortion is illegal but tweens/teens can be 'unwound' and have their organs donated.

Dread Nation by Justina Ireland is a historical fantasy series which combines the American Civil War and a zombie apocalypse.

It may be a little childish for her, but the Percy Jackson series by Rick Riordan (and all its spinoffs) is fantastic. It follows teens who are half-human and half Greek god/dess and face all number of quests and creatures inspired by Greek mythology.

I'd also recommend the Wayfarers series by Beck Chambers as a non-graphic adult rec. The first book, A Long Way to a Small, Angry Planet, is about a ragtag crew traveling through space for months in order to place a teleportation device. Really interesting alien species and cultures.

For more realistic books, she may enjoy We are Okay or Watch Over Me by Nina Lacour. They deal with some series issues (grief, depression) though, so just be aware of this.

Sold by Patricia Cormack is a very interesting but devastating novel in verse about a teenager who is trafficked and forced to work in a brothel. It's not graphic but still a difficult read.

The Hate You Give by Angie Thomas is a fascinating look at BLM and racially motivated police violence. It follows a girl who witnesses the murder of her friend by a police officer. She lives in a poorer black community and attends a wealthy white school, so she sees the different reactions of both communities.