Took me a second too, but it's supposed to be a list of descriptors of the woman in the picture. A better way to form it would be "She uses drugs, but she is also a wife, a coworker, and a grandmother." with the last three as bullet points.
It's marginally less confusing when you see the whole series instead of just this one grandmother poster. Each one has a list of bullets describing a person, with the one thing they all have in common being "Uses drugs".