She has an extendable stick with an adjustable ball head that attaches to her smartphone, and a separate remote control for snapping the photos.
Here she is with the camera snapping away.
I looked it up on Amazon and this device is only around $6.
For a completely ego-centric society without friends, why not get this doodad and you too can take selfish selfies all day long. 😉
(Source Photo: Andy Blumenthal)