So I was in a little bit of a rush last night, and I didn't get to actually wait for her to down the first rat before putting in the pinkie/fuzzy/whateveritis. I let her strike and constrict on the first one, and then I just sort of tossed in the second in her line of sight as she was doing so.
Anyway, the good news is I came back from going out and both f/t rats were gone, so she apparently went in for a second course on her own.
Huzzah!
Thanks, as always, for the advice! This site is invaluable.