Linda Powell said her family has no intentions of selling the property or closing the longtime area business that Sheetz plans to demolish.
Supervisors want to limit both visibility of the shops and their proximity to schools.
Park Service Historian Eric Mink said the store could open the door to other development in the area and change the character of the historic district.
A public hearing on the proposed project is scheduled at 7 p.m. Wednesday, Nov. 18, 2015.
