Honestly, making up a power was harder than I thought it was going to be so I took a stab at vanilla.
Way, way after the fact I thought I should have made Meredith a Mason with Peter, but only after she found him. Each night she would ask one player if he was her Little Star Lord. She would either get no response or Yes and become a mason with him.
A day late and a dollar short on that one. Eh. Filing it away as a lesson learned.