They'll see us through several meals
It just means folk around have gone quiet and/or stepped back, I believe. Sort of a last chance to step in before Sam and Jackie are at each others' throats.
Whilst Jackie could probably take Sam down without raising a sweat, Sam's buddies are around, and being skirted and quite possibly corsetted* is a severe disadvantage in facing an armed gang. A tip from years of gaming with the Stray if you ever feel like acting on it, though: Stray does love a good duel.
*skirts so heavy and complex that rib-crushing whalebone framework was necessary, to allow the wearer to do anything but lie on the floor were still relatively common in the period...the stereotype of the fainting Victorian woman probably has far more to do with reduced lung capacity than socially enforced delicacy.