

Is there a reason you have to interact with this person? It seems like if you’re in a situation where her response comes with an LOL, your best course might be just to not engage. If you’re in a position of responsibility with teaching her how to interact then gently repeating that respecting how someone would like to be addressed is probably warranted, even if it doesn’t seem terribly effective the first (many) times.
But how does that answer OPs question about why is friends upon in Western society? That’s what ‘dawg’ was commenting about.