Well she hasn't come to my castle yet, so rest easy, man. Though, I am sniping Colorless for Bride Cordelia, and I've had two random 5*s, Jeorge and Jakob, wander into my altar already. I can't guarantee anything...
Speaking of Genny, I've had so much fun making headcanons for her. There's the one about her being Saber's daughter, then the one that she's actually Sumia's previous life...