Where are my slider controls/options?

I have been running a Striker Child theme for a year now with a custom homepage (https://www.toryleather.com). I wanted to go back and update my slider image on the homepage (the belt image), but the slider doesn’t seem to be installed in my dashboard anymore?

I was going to activate the parent theme, but am afraid to do so in the chance that I can’t revert back to the child.