Lucy's not picky about seating, so she'll just follow Murderbot wherever it goes.

"Nyuu mentioned that too, along with how humans in your world are no longer on Earth. Space is still mostly unknown in my time, so I can only imagine what you've used your energy guns on."

Lucy could be talking about her own powers, but since Murderbot isn't asking, she's not going to bring it up either. Some people on the ship know of it, but for the most part, Lucy's trying to keep the deadly side of her vectors under wraps for as long as possible. It's always nice to have an element of surprise just in case.