I like your thoughts! No matter who somebody ships Carla with, she literally saw the unfolding of terrible, toxic relationship between her own parents. I think it’s an interesting topic to explore how bearing witnesses to the disastrous relationship between her own parents would effect her. There are various ways in which a child witnessing a toxic or abusive relationship might effect them when getting into a relationship. And she was 18-19 years old, old enough to understand what was going on.
Yes exactly! Even though Victor and Ash faked a ‘good’ relationship whenever she was around (for her sake), I feel like she started to catch on near the end of it. And she was really distressed when she saw how reluctant Ash was to actually go back to free him. Who knows if Victor actually admitted that they were having relationship troubles when he and Carla were briefly held in the dungeon together, but either way no one was expecting what happened in ‘The Magic Within.’
Now we don't know what their relationship was like before Ash went off to malvago training, but it's implied that it was okay beforehand. Even so, that wouldn't make up for how it crashed and burned in the end.
In short, I feel like Carla would need some time (and therapy) before she was ready for her own romantic relationship.