Boxer. Hopkins Trilogy, #3

With his siblings moving out of the inn, Christopher finds himself on call all the time. After all, someone has to be there. The solution is easy enough and it is agreed he needs an assistant. It won't be an easy position to fill and they all know it. He finally finds the ideal candidate. Sydney is perfect and checks all their boxes. Satisfied the problem is solved, he heads off for his birthday party with old friends only to have a bikini clad Sydney jump out of the cake.
Knowing he can't work with her with that vision in his head, he comes up with a solution. The question becomes, how long will it take for the family to realize Sydney is more than just an assistant?