My DW is only 4'10" tall so i know your pain. I replaced the toggle switch in the lights she wanted to reach with a pull chain type, and you can buy them at any hardware or big box store. The one for sure is the fan in the bath with a pull chain so she threw the long stick to reach the switch away. Happy wife, Happy life.
Just the switch, you can buy pull chain types at box stores, we but the chain type not the cord type and add decorative ends on the chain to make it look nice. you might have to drill out where the old switch was a little or add a couple of washers to get the pull type to fit but it works every time.Did you replace the switch only or the whole fixture?