I, for one, think Alexia brings a lot to the table. She is the main reason for Rowan to join the Twins, a fragile person he has to protect from the rest of the world, and a sort of morality pet.
They led a very simple life devoid of any ambitions, far truer than what he would have had with a lady from the court or other interested parties. She didn't use him for social climbing or political alliances. After a long period of adventures, he longed for peaceful stability, and he seemed happy before they took it from him along with his wife.
Now he's forced to travel through a hostile land filled with mythological and horny creatures that want a piece of him, recruiting them by hook or by crook (often with his penis).
But Alexia is no Penelope. She doesn't have to reject every and each suitor's advances as her husband plows half the continent's holes because of old-time misogynistic morals. She's dutiful, not stupid. The longer Rowan is away from her arms, the more she starts contemplating the idea that maybe he's not acting with her best interest at heart... so she doesn't have to bear his.
Not every fantasy woman has to revel in the idea of being the first mate among many other pokemon-ish vaginas in a harem, because he's oh-so-alpha. Nope. She can stray and find her own strength and allies, and that's something 99% of other games don't dare to offer: a female with her own agenda looking for herself first.
She even doubts her husband's sexuality, which is a no-no for most Devs, in fear of a backlash. SoC is that brave a game.
I hope there will be a route offering an ultimate showdown between Roman and his allies and Alexia and hers, with Alexia in full villainess mode telling him he always underestimated her and cheated on his weak, ignorant, shy wife disregarding the storm brewing in her eyes every time he put his cock where it shouldn't be and made a mock of their marriage. Now she's his equal and will make him pay for her constant humiliation...