Not to defend Hillary Clinton, but take a look at these stairs. Unless you have been to some place like India, you have no idea how bad worn stairs can be. Look at the stair just above her right foot. It is completely worn, all the way back to the riser above. The stair above that is even worse. To make matters worse, there is no rail to steady yourself.
You send 100 able bodied Americans down those steps in slick leather Indian "Chappel" sandals, and about 20 of them will stumble. A seventy-year-old woman in marginal condition is almost certain to fall.
In the United States, people just wouldn't be permitted to use stairs that bad. As soon as things become worn, they are repaired or closed. When travelling to India, or even older buildings in a place like Rome, it is best to treat stairs more like a rough path than a stairway.
Hillary had no business being on those stairs. Somebody on her advance team should get fired.