Hadn't seen vs Haven't seen
Please can you tell me which is correct - haven't or hadn't?
Situation: I send picture to my friend and she replies:
"I hadn't seen it yet"
Is it right use? Shouldn't be there "I haven't seen it yet"?
Thank you for help.
EDIT: How about version without "yet"? Can I use both then?
"I hadn't seen it" implies that you had not seen it (at that time) but you have now, while "I haven't seen it yet" implies that you still have not seen it (up to now).
"I hadn't seen it yet" is an incorrect mix of the two.