They don't have to. If there is one person they don't mind sharing their memories with, they're sitting right next to Chara, holding their hand.

"...This changes things, Partner." Exposes them, far too much. Chara's lips purse, flicking a stone into the fire with their foot, listening to the hiss it causes. "I can't deny my name when so many have seen it. If Wade sees either of our memories, he will know that location."

They close their eyes, exhale, slowly.

"Sans is gone. It is possible... this charade is coming close to its end."