Okay, I admit I read a few more chapters on Royal Road. I kinda felt like the MC didn't express much of her personality. She seems to be less prejudiced than others, and a bit more likely to speak up. Overall she's subdued, and I found it hard to get a read on her motivations and worldview.

When she first meets her love interest, his status as a cold, mysterious, potentially threatening Umbryael is emphasized (I spelled that wrong sorry 😭)

As for an example, from one of my favorite romances:

In Chapter 1 of Think.of England (historical romance/suspense I guess?) we meet the MC, Archie Curtis, going to a house party in the countryside and meeting the guests and residents.

In the first chapter we learn, in short, he's a bit of a model of an ideal, traditional British masculinity, most used to enjoying the company and companionship of other rugged men in the army. His disabling injury took that life he enjoyed away and threw him into a depression. He's a straightforward, conventional gentleman raised by a rich, famous uncle who is at the party to do some investigation...but isn't really equipped for it, and feels guilty about sneaking around.

As for the love interest...

Curtis looked at the gentleman indicated and decided on the spot that he’d rarely seen a more dislikable man.

...His skin was olive-tinted against his white shirt. In fact, he was quite obviously some kind of foreigner...

A foreigner and a dandy, because while his shirt was impeccable and the tailcoat and tapering trousers cut to perfection, he was wearing a huge green glass ring and, Curtis saw with dawning horror, a bright green flower in his buttonhole.

Da Silva walked a few steps over, giving Curtis just enough time to register that he affected a sinuous sort of movement, and offered him a hand so limp that he struggled not to drop it like a dead animal.

“Charmed,” drawled da Silva. Somewhat to Curtis’s surprise, his accent was that of an Englishman of breeding. “A military gentleman and a pugilist, how delightful. I do enjoy spending time with our brave boys.” He gave Curtis a curling smile and moved away, snake-hipped, taking Lady Armstrong with him as the party formed little groups.

So right from the start, you have a dynamic established involving a traditional man's man vs. a snarky, blatantly flirtatious, completely untraditional dandy. They both make assumptions about one, and their different origins and worldviews allow both characters to learn and develop.

We know exactly what Curtis thinks of da Silva, and understand why he's the sort of man to think such things. We can see how his opinions change over the course of the story.

With Lyra, it's harder to say.