Luke Perkins did pick up Roxy Jenkins' words.
"That's why I gave you part of Tobias's work to share."
Luke pointed at Roxy and said to Tobias, "When you get better, you must thank Roxy. If it weren't for her, your work would have come to a halt. Do you know that?"
Tobias knew that Luke was giving Roxy a way to save face.
With Romyia Lowell as an all-round work assistant, his work could only be said to be delayed, not completely halted.
Luke deliberately exaggerated to make his incompetence sound more justified.
Tobias didn't respond, and instead heard Roxy say to Luke, "Uncle Perkins, can you let Romyia work with me for a longer time? I think she is really professional and has helped me a lot!"
If it hadn't been for Pierce Lennon's report last night, Luke might have agreed to Roxy's request.
But knowing that Pierce had other uses for Romyia, Luke also refused Roxy.