AFTER eating lunch, Argent helped her mother to bathe and then convinced her to take a rest. Although she'd been sleeping for quite a long time, that wouldn't really be considered as 'rest'. In her mother's case, it would probably be considered more as torture.
Argent thought it would take a lot more convincing before her mother agreed. But to her surprise, after letting her lie on the bed, her mother immediately fell asleep. It just showed how mentally exhausted she was. After making sure that her mother was truly asleep, she temporarily sat on one of the couches on the living room.