BRAKE FLUID IS LEAKING SOMEWHERE!!

[98blackcivic]

hope i got ur attention with the title

ok so my 92 prelude si 2.3 has a leak somewhere in the braking system.

all lines are good, brakes bled and double checked...but the mechanic has it pinned down in the abs unit somewhere

so heres whats going on

brakes stopping working..the pedal really has to be pressed down all the way to even slow down and the tire start skidding.

so to my knowledge it comes down to the ABS module and the relay..
the relay should be good cuz its not the accountable for the missing fluid.

so even tho the mechanic also checked the brake booster and the master cylinder besides the brake lines,

do you think it could be the ABS module?
im confused and not looking forward to paying 300 bones for a new Module..

someone, advice would be helpful