The story was about a teen girl who is abducted. Upon waking, she finds herself in a secret secure basement that's basically been tricked out into a fairly pleasant apartment with individual bedrooms. There are several other kidnapped girls there, all of whom have been given flower names by their captor--Lily, Rose, etc. Some of them have been there for years, and each has accepted her captivity to various degrees. Whenever one of the girl dies (or is murdered), the captor kidnaps a new girl, who inherits the old girl's flower-name. The protagonist eventually escapes.

I can't remember either the title or the author, but it's a fairly recent book published in the 2010s, and I think it was pretty popular for a very brief period so I'm hoping someone remembers it!

The Cellar by Natasha Preston

That's it! Thank you so much, Ms. Charles.