Since 90% of what I read is sci-fi/fantasy, I have SO many recs. Here are a few:
-The Adventures of Amina al-Sirafi by Shannon Chakraborty (one of my favorite books from 2023)
-Leigh Bardugo's whole Shadow and Bone series or her Six of Crows series (both series start with the eponymous book)
-The entire Queen's Thief series, starting with The Thief by Megan Whalen Turner
-Tress of the Emerald Sea by Brandon Sanderson
-Trickster's Choice by Tamora Pierce
Given what you listed, she sounds like she's into Romantasy as a genre, and Fourth Wing / Iron Flame are solidly in that category. Most of my recs above have some romance woven in, but here are a couple more focused primarily on romance: Caraval by Stephanie Garber and Victoria Aveyard's Red Queen series (starting with Red Queen).
Perhaps the Liaden universe? [link] I was hooked several decades ago by
Agent of Change,
which is more action-adventure-y, but there are more fantasy and romance-y books in there as well.
Also consider anything by Diane Duane. Lots of series to choose from, in a variety of genres.
Ooooh. Also Janet Kagan is a favorite of mine, either
Hellspark
or
Mirabile.
and then something called the Fourth Wing series, which I presume is this?
When I was in Borderlands last, my friend Eleanor was gleebling with two customers about this series. It is White Hot among a certain demo.
Apparently there's a very spicy Zaddy.
Megan, the ones you listed are the ones everyone is always squealing about on TikTok. I’m seconding Shadow and Bone/Six of Crows series by Leigh Bardugo. And maybe something by Lilith Saintcrow (she has a couple different series).
Yes, I've read both of the spicy duo. Lots of dragon sex. Or sex because of dragons. And silly teen angst.
gleebling
What does this even mean?
Apparently there's a very spicy Zaddy.
And this?
Wait, scratch that, I don't think I want to know what that means.
Shadow and Bone/Six of Crows
Six of Crows over Shadow and Bone would be my 2 cents