It's fine for there to be movement that low! It'll probably just be uncomfortable for her. It could be the baby's head moving around. My babies always seemed to GRIND their heads on my cervix and it hurt.
Most likely he is breech (not something to be concerned about until the last month of pregnany since only 3% don't turn by 38 weeks) anyways he is so small right now that he is probably flipping all around. When my daughter was breech I was getting a LOT of kicking down there.
I am about 33 weeks pregnant and I also have been feeling my little man really low. He is head down so he is punching and headbutting low. I am sure everything is okay, but if she gets too concerned I would tell her to call the doctor, but rest assured this isvery normal...