I wouldn't ask, but, here is what I would do:
Start treating her in a way that you might want to be treated. Don't go out of your way, because that might seem weird. But, just little things. Like, if there's a sensory thing you can help her avoid, or you can sense that she may be getting overwhelmed with things that other coworkers might not be overwhelmed by (lights, phone calls, noise, etc) to do little things to take the load off of her. (As in, someone is going around saying, "Oh, I wish that I could move out of this cubicle. It's just so dim! I want one that's more well-lit." you could offhandedly mention to possible-aspie-coworker that this person is looking to switch, which would give her a possibility to work in an environment with less overwhelming light.) Personally, I work in a store that requires a certain amount of customer service, which makes me nervous, and plenty of sorting/packaging/making, which I love. Little things from a co-worker who understood, that I would like, without thinking it was weird, would be if I were immersed in the more object-oriented parts of my job, say, packaging chocolates at a side counter, and customers came in, for them to say, "Oh, don't worry about it! I'll get them, and you don't have to jump away from what you're doing." It would let me keep my focus, and not feel so drained, without feeling like I wasn't doing my job. But, at the same time, I would never, never outright ask a co-worker to run interference like this for me. I'd hate to be accused of being unable to do my job. Because I CAN cope with jumping away from my more-liked tasks, dealing with customers, and then regaining my focus for what I was doing. But, I'd LOVE if I didn't have to.
Anyway, you could give little things like this a shot. Just, don't go overboard, and if this bugs her, then don't do it. But, if she is an aspie, she might appreciate it, especially if she has a hard time admitting the things that she has difficulty with. No guarantee that this will lead to any conversation about it, but, maybe it will lead to a quiet understanding between the two of you, and sometimes, especially between coworkers, that's all that you can hope for.
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-- Wherever you go, there you are. --
Your AQ Test Score is: 41 EQ: 17
Aspie score: 148 of 200 NT score: 51 of 200 // RAADS-R: 186