Northern Arkansas is pretty much out of range of KFVS's digital signal. It's on a 2,000' tower but is only allowed to broadcast at 6800 watts at that height giving it a coverage radius of around 65 miles max. Your mom is about 80-85 miles away.
A decent visualization of their coverage map is at
https://www.rabbitears.info/contour....=1318593&map=Y