At least Willy didn't abuse her. 
But he was the one who brought those who did. That's worse.
But he's her father.
Makes no difference.
Come to really believe that it's not my fault.

The Wounded Heart: Hope for Adult Victims of Childhood Sexual Abuse

But in every case of abuse, the dignity and beauty of the soul have been violated. Therefore, damage will be present whether one has been struck by a Mack truck traveling fifty miles per hour, or "merely" hit by a tricycle rolling at the same speed

When abuse is perpetrated, it sets into motion the tremors of an internal earthquake that requires a strong and nurturant environment to quell. If that environment is unavailable, or worse yet, if the environment is hostile, cold, and/or insensitive to the resultant damage, then a victim will set aside the internal process of healing to ensure his or her own survival.

A father is called to be a secure, trustworthy, and life-generating surrogate for God until the child develops the capacity to see his or her heavenly Father as the only perfectly trustworthy Source of life. The victim's struggle to trust will be proportionately related to the extent her parent(s) failed to protect and nurture her as a child.

To the degree that confidence in the love and respect of one's parents is disturbed, the damage of intra- or extrafamilial abuse will be more traumatic. 
Whatever it is, God the Father is there to listen and to comfort.

(There is a desire to separate reality of the abuse from life.) To open one's heart to a truth that is deeply devastating seems, at first, foolish; however, the hard, cold parts of our soul are continually tempted to thaw by the warmth of the longings of our soul. Every pleasant interchange is an invitation to life; every deep sorrow stirs the passion of grief. Those daily temptations to life are viewed by the person who has been sexually abused, at best, as a two-day vacation to a warm climate and, at worst, as the melting of the polar ice cap. A total meltdown spells disaster; therefore, the icy soul must remain frozen and hidden.

Must ignore the desire to avoid the war.  Once the war is avoided, then something must be done with the wounded heart that cries out for solace and hope. The cry must be heard or squelched. Sadly, the choice is usually to stifle the groan. What normally mutes the cry is the internal dynamic that promotes denial, mislabeling, or minimization. The dynamic involves the subtle workings of shame and contempt that serve to keep the soul frozen and the warmth of life at a distance.

Childhood survivors may also experience the event over and over again through dreams, nightmares, flashbacks, or sudden flashes in your mind. The flashbacks are often accompanied by the same feelings that you had during the actual event. You don't just remember what happened, you re-experience it for a moment, or for several minutes

When parents involved in sexual abuse, God must provide the context of support and protection for the child overcoming trauma. Achieving mastery over the experience will be up to her. Though traumatic, replaying the event in her mind must come to resolution and not become repetitious.

Loss of appetite born of a conscious or unconscious attempt to “lock out” others and to ignore the body. Also common is the tendency to live in a fantasy world, have problems with attention, space out, daydream or dissociate in order to compartmentalize their awful experience. By using a guided process of articulating and expressing the sensations they are feeling in the body, children are able to literally “unlock” and free themselves from the event.

Trauma Through a Child's Eyes: Awakening the Ordinary Miracle of Healing.

It Happened to Me: A Teen's Guide to Overcoming Sexual Abuse