Her organisation has been going into New York schools to help kids talk about their anxieties.
Kids are encouraged to express themselves through art and poetry too.
And the children have also been meeting the rescue dogs who helped find survivors after the Twin Towers collapsed.
Animals have been used for years as a way of helping people talk about their feelings, says
Dr June McNicholas, an expert in pet therapy at Warwick University.
She says that animals help in two ways:
kids will focus on the animal and not the adults around them
kids can talk to an animal knowing it won't tell anyone else
"Animals don't judge," says Dr McNicholas. "And a child can use an animal to rehearse what they want to say to another person.
"Just sharing the problem can be comfort enough."
In New York, Project Liberty expects another big rise in demand for its helpers around the 11 September anniversary.
It is running TV commercials aimed at young people.
"A lot these children are feeling anxiety, or don't want to leave their parents and we have to let them know this is okay," says April Naturale.
If you want to contact Project Liberty you can click on the link on the right hand side.