Well, like most, I am assuming she can see the ghost, or at least a shadow of smth; meaning this is hereditary, and their parents probably have it as well.
I wonder if noise will dive more into that or will just stay a means for more plot and gags. Either way fine with it.
It'd be funny and awkward if he ever invited her to a family dinner lol.
PS: While I understand the "your" thing is just supposed to better help visualize her rougher speech pattern, but I cant help but cringe lol