I found a handle that fits the door (your Legacy Keyed Handle Set 3-15/16" (1-1/8" to 2-1/2") but it does not have the lock, or that little hook that comes out and hooks to that little piece on the doorframe.
can you advise as to what handle and lock will work for this door
(I have looked around the door and inside it's frame to see who the manufacturer is and am not seeing anything as to who the maker is)
Thanks so much
Stella