The story is...if you spare udndye on a genocide run this battle happens after the sans fight...so asgore is not there...and she absorbed the 6 human souls so she is VERY powerfull! this is not canon and comment if u think this shoulbe be undyne the undyning...K have fun getting game overs! (I might add battle against a true hero or spears of justice...I dunno k lol) also undyne absorbed papyrus` soul :O
credits to the 2 projects below!
