I went into the upgrade item menu and the description on the staff says it can only be used by Daphne.
I screwed myself getting the staff. All that effort was wasted. The staff will sell for 10,000 which appears to be it's only worth other than upgrading other items. To try and upgrade an epic item from lvl 4 to lvl 5 this staff will provide 31% of what I need and cost 100,000.
I could have done a helluva lot better than that just farming.

There is a chance the cape can only be used by Daphne. It is listed as a necromancer's cape. The shoes I would hope can be used by other maidens.
I have neither of these items though, only the useless staff.

Does the game state anywhere that the staff would be a Daphne only item before you actually have possession of it? I see it nowhere.