It’s just a part of her culture.
She uses them mostly for yard work, and for working in her flower garden.
She loves flowers.
They also came in handy back when we had a derecho here a few years ago, with lots of trees uprooted. An elderly couple was trapped in their bedroom just around the corner when an uprooted tree fell on their house, so she came home and got one of her machetes to hack away at the tree to help free them.