Jenkins decommitted in the moments following James Franklin's firing.
Smith is in his 12th season as a coach at Penn State.
With Drew Allar's Penn State career over, it's Grunkemeyer's turn at the helm for the Nittany Lions.
Allar was carted off late in the fourth quarter against Northwestern after a 1-yard scramble.
Specific game designations are to be announced as the Lady Lions will play in their historic home on a "more permanent" basis.
