I've never heard of that slur before and certainly would never use it towards anyone with aspergers. I've heard aspie before but always thought that was an okay term. If you find it offensive I will stop using it.
Btw I know the possibility for DV, Substance abuse is there for our first year standardized patients. Perhaps it's different for me because I'm actually a trained DV/SA advocate so I know how to handle those situations better than your average medical student. What's important to note is, victims of intimate partner violence don't wear signs on their forehead saying "I'm being abused" they come in all different genders, races, socioeconomic status, etc. They also may have never told anyone about their abuse before and will likely minimize what's going on, "he only hits me when he's really mad, he's never hit the kids, it looks worse than what it is" while you should make it clear you are concerned about them, just saying "he's a monster, leave him" will cause them to shut down and not trust you. You can't expect them to just leave right away, it's not that simple and it's one of the most dangerous times for them right after they do chose to leave (the other time is if they are a woman who becomes pregnant). Also you can't really "get them" to leave, they have to want to of their own accord.