To apply female gender in ASL, use the sign for GIRL.
The dominant hand produces an 'A' handshape.
Then, with palm facing outward, the signer draws the thumb along the cheekbone toward the chin.
Many women with Asperger syndrome are not identified at present. Generalising, we tend to be quieter and more well-behaved than men, so may not present any sort of challenge to school teachers....