The context of the following conversation is Bailey saw someone in Aubrey's locker, so they told Aubrey what they saw.:
Bailey says I saw some dude going through Aubrey's locker..
The friend responds No way, I she keeps her lunch money and phone in there..
Bailey responds We better check it out..
The friend responds She also has her make up kit, gym clothes, vape and personal stuff in there..
Bailey responds I know who it was too..
The friend responds You should tell Aubrey what you saw..