"No, c'mon, we'll do it now." For all that Emma wanted to be left to herself to build up those walls again, she wasn't really craving the isolation. Talking Jefferson into going about his business was hard enough, probably because he saw that she wasn't yet entirely okay, and Ruby giving her space, meant she would likely return to wallowing when Hawke left.
Keeping him there with some food until Jefferson got home might be selfish, but that seemed to be Emma's wheelhouse right now, so why hold back?
"I can even send you home with some." Even if it would be obvious where it came from, it was potentially a start.