How do I make a person move a boulder blocking a maze exit

[footballfan1234]

Hello all, I need help with an assignment for school. I have to navigate a lost girl through a maze and have her exit outside the maze. A large boulder is blocking the maze's exit. I am not sure how to make the girl lift the boulder or move the boulder that is blocking her way. In other words, how can I tell the girl to move the boulder and place it somewhere else so she can exit the maze? Any help, tips, or suggestions in this matter is appreciated. Thank you.