Books to get somebody into reading?

I'm asking on behalf of my cousin who says she just can't manage to get into reading no matter how many books she tries to read. I genuinely think reading is for everyone and she is also capable of getting into it, but I had no actual suggestions ti give her. So does anyone have any fast-paced, preferably short books that could get someone with a short attention span that doesn't read to get into it?? She doesn't really like romance but anything else is probably fine 🙃 She's 15 but can deal with mature stuff, so that's fine. I think she tried reading agggtm, the seven husbands of evelyn hugo, the secret history. She actually read daisy jones & the six (she loves the show) and the outsiders, but she said she didn't really enjoy it.