It's no wonder Nicki Minaj has decided to stay away from her brother Jelani Maraj's child rape trial.

The former stepdaughter of Maraj gave chilling details of what Maraj did to her during testimony yesterday.

“He would call me his puppet and [say] I had no say in what he did to me,” the girl told the court.

“It was a Saturday morning,” she said. “I had went to him to go say ‘Good morning.’ I had hugged him as usual. I went to go lie next to him as I usually do. When I did that, he told me to go close the door. He told me to take off my pants. Then he told me to come under the covers with him and he started caressing me.”

“He used lubricant and told me to breathe properly and not to clench so it wouldn’t hurt so much,” she said. “It hurt. I told him to stop and tried to push him away.”

“He had mentioned I was brushing myself on him and that I wanted it to happen,” she said.

Schwartz was hoping Minaj would corroborate that charge and tell the court Robinson tried to shake her down for $25 million.  But Minaj's reps have said she won't be testifying.