Mary watched Eustace move towards the windows. As he drew the blinds closed, she grabbed a nearby throw and set it down on her couch before sitting down in the corner, curling her knees as close to her body as she could. If nothing else, it gave at least a very small amount of modesty should his eyesight return.
"Thank you," she said. "I am not taking you aware from anything, am I?" Though with his eyesight being affected, perhaps it was the only thing he could do right now.