Should I ask this streamer out?

[NearlyNapping]

If someone lives in another country, you need something a heck of a lot stronger than calling you a cute name. You'd need a strong and mutual online relationship before you should even consider something long distance. Unless there is more than what you said, you are not even close to that point.

Just talk to her online and see where it goes. You need to take make personal and see if there is any mutual attraction.