The compulsive lying is a self preservation technique, but not healthy to you or those around you. No one is goin gto punish you anymore. Many children are taught to lie, or should I say not tell the truth about what is happening. They don't want to be punished and the perps threaten them like this.
the trich is an impulse control disorder. Tho many connect it to ocd. There is a forum for it here , you might find the answers to that one there.
Being molested causes alot of mental, emotional harm. We feel different, in need of punishment, dirty, ashamed, you name it. we each deal with it differently. Mine manifested as bpd. Others DID.
You might do a psychological eval thru a psychologist, to see if you have a dx.
I'm so sorry this has happened to you.