i think that Ling is a named character, whether her name is used in the movie or not. (my thinking is she is not "girl #1" or "hooker #2", if she has a name, she qualifies)
that said, this movie passes 3/3: Ling wakes Mei in the middle of the night and informs Mei that her mother is dead. Mei thanks Ling, and promises not to tell anyone that Ling told her. clearly, two named female characters having a conversation about a woman. it passes.
The problem is that Ling is a minor character who, as far as I can tell, is never mentioned by name in the actual movie - her name is only revealed on the closing credits. So is she then considered a "named character" or not?
Depending on one's definition of "named characters", the film therefore either passes 1 out of 3 tests or passes all three tests (albeit with a very small margin).
Considering Ling's name isn't revealed or mentioned during the course of the actual movie, I have for the time being chosen a rating of 1 out of 3 tests, but I'm actually not sure what the general concensus is on this matter?