Rudi Simone's book about some number of things every woman should know if she loves a man with AS is a really helpful starting point for women in NT/AS relationships.
There are bits of learning that some AS people have to do consciously, which the NT world assumes they know by instinct from childhood - and of course those things vary, but might include: reading facial expressions and deducing emotion from them; deducing emotion from tone of voice or from shades of meaning in the words used; recognising emotions in themselves including anger; learning that their thoughts may not be shared by the person with whom they are in conversation; learning that just because something seems completely logical to them, it might not seem completely logical to someone they are talking to, and may continue not to seem logical to that person, no matter how long the explanation goes on for.
I think it's almost impossible for someone not on the spectrum who also has no experience of living intimately with someone on the spectrum to imagine how those impairments play out in family life. From the outside - there will be all sorts of occasions where the NT world would shout "ABUSE! Leave the bastard" (in the same way that 95% of "experts" spout bullshit about establishing firm boundaries with children who have autism, and then they will be magically "fixed" into being "normal") but, for me, abuse is about intention.
There may be hurtful remarks; there may be lack of empathy and therefore continuing to try to hammer a point home in an argument when the person being talked to is feeling completely flattened by the pressure of the argument, but honestly, on a deep level, still doesn't agree. etc etc etc
But if there is no intention to hurt then NO, it's not abuse IMO. It means that the couple in question have a lot of work to do, together, to help the AS partner learn not to be hurtful, and to help the NT partner learn what sorts of "reasonable adjustments" are necessary, reasonable and acceptable to them at this point in the AS partner's development. I think that to have a healthy AS/NT relationship can take a lot of openness and a lot of explicit learning on both sides - I don't think that one member of the partnership can decide that things need to shift and x,y,z need to be learned - it has to be a joint effort with shared goals.
And there's stuff about expectations too - Rudi Simone talks about sensory issues and how that means, for some people with AS, sharing a bed is just hellishly unbearable. So from very early on in the relationship, the couple may have separate beds. From an NT perspective that's going to be very unusual and probably shows the AS partner doesn't really love the NT one (Leave him!!!!) but from an autism aware perspective, it is completely understandable. If an NT partner really craves physical closeness with their partner all night every night, then an AS partner with those sorts of sensory issues wouldn't be a good long term choice. And there are benefits that go with the quirks that often go with AS, if the NT partner is of a frame of mind to see them as such (there can be benefits to sleeping alone, which some NT people might genuinely appreciate, yk?)
What I'm getting at is: if you are someone with lots of experience of NT/NT relationships, you probably have very little idea of the possible dynamics of an NT/AS relationship, and of the challenges and rewards that such a relationship might offer. On an internet forum, based on an odd anecdote, it's terrifically easy to label a behaviour as abusive when it is, instead, simply the result of a lack of understanding on the part of the AS partner. If the understanding can be developed then the "abusive" behaviour really really really will disappear.
I'm not an apologist for abuse. I'm also not an apologist for staying in a stressful AS/NT relationship which isn't getting mended and seems to have no prospect of it. (though I have seen a couple recently - acquaintances of mine - who have been arguing viciously for 25 years - the NT wife is the much more aggressive one, constantly trying to change the husband, sniping at him in public and in private about his shortcomings. I think she was just unbearably embarrassed by him (why she married him was quite the mystery) And now he is going through diagnosis and she is beginning to accept his idiosyncracies and the transformation in her behaviour towards him is miraculous - fond and supportive and confident in him. Just amazing to see. And it's also a reminder that the person who has the most learning to do in the healthy-relationship stakes is absolutely NOT necessarily the AS person in an AS/NT scenario...)