You know, I always wondered how Victor and Ash met and began a relationship in the first place. Especially if Ash was still hellbent on tracking down Zopilote and on the path of gaining unlimited power. I think chances are zero to none of Carla dating a “good” evil person. I can’t even see her with Alonso. Dating a Royal guard that is dedicated to protecting Avalor and dating the Royal Wizard would imply just how much Carla has gravitated towards goodness and good magic.
In the end it's up to interpretation, personally I like to think that they met because of their mutual interest in doing shady things. Mabey they met while trying to steal the same thing and then decided to work as a team to steal stuff and then it just snowballed from there. But ultimately Ash’s thirst for power was stronger than the connection she had with Victor.
I think the chances are 0 as well, I was just speaking hypothetically. I can see the merit in either of those ships and it's cool if you ship them, but personally I'm neutral about them.
A pairing I have heard suggested for Carla is Alonso. I feel like I really have to say no to that one. Like you said in a couple of your posts, Carla saw firsthand what happened between her parents. And a big part of what happened was because of Ash’s self absorbed and egotistical nature. So I think Carla would be weary of someone with those traits. Also, I’d like to point out that post reformation Carla is a very sweet, kind, caring girl. So I don’t think she’d be attracted to someone like that
I think Carla wouldn't want to spend time with anyone who is that self-centered, pre or post reformation if she didn't already care about them. (Although pre-reformation she would've totally hung out with him if it was for a scheme and would have swindled him of all he had).