Does anyone find always-sarcastic people (like dakota johnson) sociopathic?

I actually kind of find sarcasm to be attractive in a girl. I like a girl who is spunky and can talk back a bit. I dated girls that had no spunk or sarcasm at all and it was quite boring to be honest. I can't deal with a girl without spunkiness I get bored and it ends within a few months. In truth I love girls who are sarcastic. As for sociopathic behavior, sarcasm is not sociopathic. Sociopaths lack empathy and if you were laying dying on the side of the road bleeding a sociopath would look at you and just keep on walking by. Sociopaths don't care about others, some don't even care about themselves. Sarcasm is just well just spunkiness it's not a symptom of a sociopath.

Nope. Sociopaths and psychopaths lack empathy, so can"t detect sarcasm nor can they connect to other people on emotional levels. This means that they don't know when people are being serious and when they aren't being serious. As such, sociopaths and psychopaths think that 'every' single sarcastic word, body language or facial expression exhibited by a seemingly sarkie person is what the sarkie honestly thinks or believes

People who are always sarcastic tend to hide their true feelings behind the crude/dark humor or pessimism displayed through the sarcasm. It is a form of insecurity which is usually due to some kind of (mental) abuse in their past. Sociopath? Not necessarily. Sociopathic people emotionally or socially manipulate others no matter who they are to them. Some use sarcasm in the form of manipulation, however it is indirectly or vaguely related.

Is she always sarcastic? How much time have you spent with her exactly? 

Sarcasm is an indication of wit and intelligence much more than it is an indicator of sociopathy. Humour generally requires empathy so in fact sarcasm is likely to be an indicator that you are not a sociopath. 
If you don t get sarcasm or don t like it, then you might be a sociopath.

No but I am a pretty sarcastic person. 
I once tried to not say anything sarcastic for a month. It was so hard! I didn't even know how to speak to people. 
I'm resisting the urge to answer your question sarcastically right now

She isn't sociopathic, but there is definitely something wrong with her if she thought 50 shades of grey was a good idea

I think you're assigning a pathology to a demographic group... might want to revisit your idiopathic pharmacist, dude.