>>58111316 (OP)
It's Lana.
>Misty
Would lord over it to Ash's face.
>May
Has no interest in Ash.
>Mallow
Idiot.
>Lillie
Wouldn't even take the test to begin with, she wouldn't understand.
>Dawn
No interest in Ash that way. They're practically siblings from how they behave.
>Serena
Would keep the test as a prize, then surprise Ash later. No way in hell she'd throw it away.
>Latias
One, it's not Bianca there. Two, Pokemon wouldn't understand a pregnancy test.
The only one that's lewd enough to do it but then get embarrassed enough about the results to throw it away is Lana.