Ji Xiaoxiao is apart of the Ji Clans branch that resided on Planet South Heaven.
He met her first when she was facing off against Fang Yu . Later, he blackmailed her into taking him to the corpse of her fellow Clan member who he had killed. Like many other South Heaven Cultivators, she owes him Spirit Stones from the time when they were all descending into the Fourth Plane of the Primordial Demon Immortal Plane.
With the destruction of the Mountain and Sea Realm and how low her cultivation is it is presumed that she is dead.