It’s hard to tell with out its flowers. If your friend could give us other clues i.e. plant’s location, height, flowers (color & shape), fruits, etc…these will help us to narrowing down the ID for you. I have some ideas, but without other above mentioned details, I’m reluctant to go further. For now check out plant propagation method from the included link below. Best wishes! https://content.ces.ncsu.edu/plant-propagation-by-stem-cuttings-instructions-for-the-home-gardener