Anna Kopp and Gabrielle Kari's The Marble Queen has some lovely art and character design (though it didn't always look consistently great -- there are some panels that really lack polish).

Story-wise, the pace is a bit meh, since we're meant to believe that Amelia and Salira are in love really quickly, enough to overrule Salira's love for the woman she meant to marry instead. (This is kind of "handled" in that Salira says that she no longer loves that woman because of the circumstances, but it comes across as pretty thin.)

It's a fun concept: Amelia is the princess of a kingdom practically besieged by pirates, married off in order to cement an alliance. To her surprise, she's married to Queen Salira... and unable to ever leave the country again because of magical reasons. She accepts all this remarkably quickly, manages to notice plots that Salira was completely oblivious to, etc, etc, saves the day, etc, etc, happy ending.

It all just goes too fast, probably not helped by the format (it's harder to do lots of quiet pining scenes in a graphic novel). Even when something goes wrong and Amelia is imprisoned, it's literally just for a night and suddenly everything is fine again in the morning.

There are upsides -- Salira and Amelia are adorable. There's also some discussion of Amelia's anxiety, which is represented throughout the story by briars grabbing hold of her, and a little bit of Salira's. Ultimately, though, the book just doesn't linger with any of its themes, and the more I think about it, the more it crumbles.