Does dangers special power negate the bonus for the FF ATA if she has line of sight?
Sorry if this has been discussed already.

No worries, but Danger's power negates modification, while FF ATA is replacement. Kind of weird, but keep in mind, if you're specifically adding or subtracting, it's modification. If you just got rid of the old number altogether, it's replacement.

Same way she can't affect the "Defend" power or Blades/Claws/Fangs

Thank you.