You had your chance headcrab, she won't wait forever to be parasited.

The Mann Manor concept of grabbing masks made me hate the map because you want to stop everything to get that extra one (and complete the set) but your chances are as good as any other people on the server. I end up disliking the frustation which comes with the gift hunting (and missing it for a hair) and probably won't touch the Manor again after I complete it.

And since we are talking about frustation...