corrrect sentences

"Had" could be correct, depending on context.

But if the first sentence had "have", then of course "have" is the correct choice for the second.

but u already mentioned the time when u met her, so the action is completed. I think the use of the past perfect would be more appropriate since we use the present perfect when talking about an action which is still going.

In 1995 I discovered was going to university with Susana

A : Had you met Susana before?


B: Yes, I had. I met her about five years ago in Madrid.