According to Sahil, incest is the least likely form of child sexual abuse to be reported because the adults most likely to intervene are often complicit or unwilling to turn in their own spouse or family members. Bano has found that families will often throw up their hand and say something like, "What has happened has already happened, what's the point in having someone from our family go to jail."
Sarah Zaman, who heads the Karachi-based NGO War Against Rape, says that combating predatory incest has been particularly difficult in Pakistan, where it can be difficult for political and social leaders to admit that such things could happen in an Islamic country.
"Absolutely!" Yousuf tells me when I ask about this theory. "That's totally taboo and totally denied here because it's not supposed to exist in Islamic society."
"There is this state of denial that this cannot happen in our family, it cannot happen in our country," Yousuf explains. "I think it's really under reported because it's linked to a family's honor in many ways. It's a crime that's covered up by the family."
Every time that Zoya would turn to her family for help, she says, she was given the same false promises: he'll stop abusing you.
"Oh, don't worry about it, your father won't do it," an uncle once told her.
And she wasn't alone. Zoya's two younger sisters weren't spared by their father.
When Zoya was 18, one of her young sisters took her own life by hanging herself. Two weeks later, her other sister did the same. Over a decade later, their deaths haunt her. She said she still feels guilty that she wasn't able to protect them from her father.
"I am still alive although my sisters are gone," Zoya says.
"In this society, we pretend it's not happening," Zoya says, "even if people know it's happening they'll turn their face and say, "We don't want to get involved.'"
The abuse only got worse after she told her mother, Zoya says.
"After that, my father would not let me talk to anybody, anyone at all, not even my family, not anybody," she says. "And that way he managed to keep me isolated for most of my life. I was always afraid."
Tauqeer Fatima Bhutto, the Minister of Women Development for the province of Sindh, says the government is trying to work on the issue.
"The government has continued to work on legislation dealing with sexual abuse and domestic abuse of women and children. If you say, 'Well Pakistan just doesn't have laws,' Pakistan has everything available, but we just need people who will work on these issues," she says.
Sahil, the NGO, is producing animated short videos, which it distributes to public schools as a teaching tool, on the dangers of sexual abuse. The video series, titled Meri Hafazit which means "my protection" in Urdu, teach about various forms of sexual abuse in gentle, kid-friendly language.