Welcome to the forum!!! As for sexing KSB'S, it looks like yours is a female, but if you can get a shot of the tail and vent area, i'll be able to tell you definitely one way or the other.
Another way to sex KSB'S is if you firmly, but gently, run a finger from the vent to the tip of the tail, you should be able to feel a males Hemipenes basically snap back like a rubber band.
Another way is tail shape-
Top is a female, bottom is a male =)