From an emotional standpoint, I completely agree. She would not have been the right companion for Ten, but maybe for a more stable, less on-the-edge-of-breakdown Doctor, she would do brilliantly.
I don’t feel like I really know any Doctors who are well balanced because I mostly am familiar with New Who, but maybe one of the Classic ones. Even so though I think as an audience member I would find her totally-unsympathetic-ness hard to watch. She’s sort of like if you took all of my least favourite River traits and removed all the things that make me fond of River.
Oh gosh, yes. Imagine Waters of Mars with her as the companion… she’d be pushing him to break all the rules just to see how far they could take it. I started plotting a fic about that once, lol.
omg Waters of Mars with Christina would be kind of fascinating in a terrible way, lol.
WHICH actually raises an interesting point that might be an unpopular opinion: generally it’s consensus that Ten wouldn’t have gone so off the rails in WOM if he’d had a companion. But the subtext of that always seems ot be “because the companion would tell him he was going to far”. Butwouldthey? Think of Donna in “Fires of Pompeii”. If he’d given her the option to stop the explosion, she’d’ve leapt at it. I don’t think Rose, Donna or Martha would’ve had any easier of a time turning away from those people than Ten did — in fact I think they’d be quicker to say “fuck the laws of time” because they’re not Time Lords and I think they’d have a much looser regard for ~the laws~ for that reason.
In reality I think having a companion there would’ve stopped Ten’s breakdown, but more in a way like we saw in “Fires of Pompeii”, where having the companion there would’ve made him more focused on not breaking the rules and also more focused on keeping them safe.