How amusing!
Let's see...
IMO, you should avoid "Excuse me" because that literally translates in most languages to the thing you should say if you accidentally belched in public.
"Pardon" or "Pardon me" sound fine in all English variants...but it seems rather polite for Lois. Dontcha think?
"Sorry" in this context is more common in Brit-speak than in US-speak. But it sound like it could be right.
In my mind's eye (ear?), I hear Lois responding, "Huh?"
Have fun!
Sherry
