Your mom is right - avoid mealworms and waxworms (one now and then is okay as a treat)
Better options: roaches (of an appropriate size), silkworms, crickets, superworms (aka kingworms), hornworms, isopods, phasmids, moths, cabbage lopper worms, butterworms...
Most panthers dont eat veggies and fruit (that's typically the vields). Feed the veggies and fruit to the crickets and roaches instead, to make them nutritious.