Gift for girlfriend

Hello dear booklovers of reddit, i have a request. My girlfriend of over 5 years has her upcoming birthday. When she has a good book, she loves to read and mostly finishes the books in a very fast pace.She is 22 years old, soon to be 23. She obsesses over them (in a healthy way i would say) and after reading she tells me all about them very in depth and raves about them for a couple of days. This was also the case for her last book "the end of loneliness", in german. (I think she is fine reading both english and german). She really enjoys reading contemporary literature, and in the past she read books of Sally Rooney, and enjoyed them all, especially "normal people". I have now looked around to find books, which might intrigue her in the same way those books did. After some research i came to the conclusion that she might enjoy the following books as much: "Tomorrow and Tomorrow and Tomorrow" "a little life" "on earth we are briefly gorgeous" "the flatshare" "one day by david nicolls" and "the midnight library". This based on what i also described in this post. Im having a little troubles choosing which is best and which is a must read, and she would enjoy most and im feeling a bit anxious about this, because this is gonna be a main gift of sorts since she said im not allowed to spend more than 50 Euros this year, in total. Anyways, if you could help that would be lovely. If you have any questions or suggestions please let me know. And thank you very much in advance, this means the world to me, and probably her as well. : ) < 3