Just curious why you think Christopherus' approach wouldn't click with a right-brained learner? The arts-based and story-based approach would be especially suited to a right-brained kid, generally speaking.
Did you mean to say that she's NOT a right-brained learner? I'm wondering that because Aspies tend to be more like that, needing highly structured and rule-based approaches.
Something that might suit both types is Progressive Phonics - my daughter's been really enjoying it. It's right-brained in that it has engaging stories and pictures and isn't "drill and kill". It's left-brained in that it proceeds though a sensible sequence of rules and teaches the rules relatively well. The child just reads the big red words in each story while the parent reads the rest, so the stories aren't limited to the simple words learnt so far at any particular level. It's fun that it's cooperative like that. It's also completely free... you just register on the website and you can download and/or view online all their books!
If she's very much on the Aspie side of things and likes detail and repetition, she might enjoy the 100 Easy Lessons book... I forget the precise title but you should be able to find it easily. I love the approach of it, it REALLY breaks things down into MINUTE steps. Many kids are turned off by it, though, because it's so very dry and repetitive. It's quite strictly just exercises and more exercises, without much in the way of stories or 'fun stuff'. But in purely technical terms, it's a great curriculum and would suit a child who's into details like that.