Be careful...first of all, as Falcon Guy said, they will ask you what you did to fix it, and then they will look at it. I'm sure that "liquid steel" or whatever exhaust putty will not be an acceptable repair to the state (and really shouldn't be to you, either). Second, they may have given her a book of listed shops where she can have this "emissions service" performed. If so, be very careful about this. My ex-gf had a bad knock sensor, and took her 4-yo car to THE DEALER to be fixed. She then took it back to inspection, where they refused to run it because she hadn't taken it to one of the places in the book (the new-car dealer was not a licensed, certified, whatever "emissions repair facility"). It didn't matter that the car was fixed, no longer coded, they wouldn't test it because the dealer wasn't in the book. She wound up leaving it with the dealer for like 2 weeks while they took it to an inspection station and argued and who knows what (bribed?)before she finally got it back with a sticker on it.
However, based on what happened to another friend, if you tell them YOU did the repair yourself, then that's fine, they'll test it.
These are just my anecdotal experiences, YMMV.