Tristan and FaMo left the company in order to see Hannah in her studio. FaMo just wanted to see Tristan while having a conversation with Hannah but it didn't mean he would stay with them while talking. He could stand just a few meters away from them and used some power to spy on them without them knowing.
Though he was still saving his energy for his recovery, an ample amount of power was enough to eavesdrop with the two of them from a distance.
Hannah was inside her studio when FaMo and Tristan arrived. She was just looking at her blank canvas, holding the brush in her hand while spacing out. She couldn't draw or paint anything. Her mind was occupied by Andrew and Tristan.
She was still in a state of confusion, that even she, herself, didn't know what she truly wanted anymore. She was torn between the two brothers. She loved them both.