Here's the thing about Helix, though... she's not behaving true to form for an autistic. Autistics don't have TROUBLE with emotions; it's that their emotions are compartmentalized. They don't connect with each other.
Temple Grandin, who is probably the best known functioning autistic today, is a university professor and explains that the frontal lobes of autistic adults are still not as developed as "neurotypical" (my word) adults. As a result, they aren't ambivalent about people; she can't imagine loving and hating the same person at the same time. Autistics - even high-functioning autistics like Helix - react to emotional issues more like children or animals (no slur meant - this is Grandin's take); they feel strongly, react strongly, but don't mix emotions. They can be furious at a person one moment and fine the next; the emotions don't get twined.
That said, my high-functioning autistic students - granted, they are adolescents - also hold grudges like no tomorrow. They can remember a slight as clearly two years later as they did the day it happen, and will refer BACK to that as proof that so-and-so is NOT their friend, and doesn't deserve to be treated well. If an autistic kid hates you, you KNOW it, and it's going to take an awful lot to change his mind.
So I've got an issue with Helix reporting Snake Eyes as KIA. That ISN'T how an autistic works. One, they don't tend to be good liars - or, they're frighteningly good because they believe their lie as truth. No middle ground.
Logically, if this is the step that Helix made, something HAD to happen between Point A (witnessing the "betrayal") and Point B (reporting him KIA) that made her willing to cover for him.
Now, if Helix's view of Snakes has not been irrevokably shattered by his series of "betrayals" - leaving her behind on the plane, using her as bait, knocking her out, leaving her in the jungle - then she IS acting true to form. If an autistic adult cares for you, they will back you until Kingdom Comes. However, Dixon has written Helix as beginning to realize that Snakes was using her - she's angry at him. Not only is she angry at him, he has not been given a chance to redeem himself; the final break, turning his back on the Joes, should have shattered Helix's hero-worship for good and for all.
Even when she pulled a gun on him, that wasn't true to form. Autistics DON'T GET CONFLICTED. It wouldn't be, "I could shoot you" - it would be "I don't WANT to shoot you, but I'm not letting you get past me." If she didn't shoot him, she'd have gone after him hand-to-hand. And if he got away, if she DOES still care about him, she would have FOLLOWED him, not returned to Baxter. Her breaking with Snakes should indicate that her view of him has irrevokably changed.
Sigh. Sloppy characterization. I'm not a fan.