It seems that Gaia's situation has become very dire for it to try and break the boundary splitting the lower and Divine Realm to just send him a message.
"Remember this Baishen, you can either train in order to prepare for the incoming war or enjoy the current peaceful situation to the fullest so that when everything starts crashing down, you can say that you lived a fulfilling life." Baishen was still in a state of sadness because of the information that he had just told her.
She looks at his sincere eyes and says "I do not know but I will go tell my dad about the incoming event that you keep on saying and Shadowslash, please survive, I wish to meet you once again."
Seeing her leave, Shadowslash silently puts a hundred clones into her shadow, they will come out once she is in any state of danger.