Search Results: what to say at a job interview

Like, my GF been trying a long time to find a job, and she finally got an interview with a prestigious company.

And she told me about it on Facebook. But how to react? I never know?

Should I say: great for you! im sure they will hire you! your the best, I see no reason why they would not want to hire you!

or more realisic way:

Im really happy for you, my love, your the best! And no matter what happen if you get the job or not, I love you, and always there to support you! Do your best so you dont regret anything. I love you...

Which approach is the better?

first case its like, she will maybe be more sad or depressed if she doesn't get the job, because I was like ''sure'' she would get it.

second case is like, I dont know, maybe she will be less confident :/

I did a bit of both, but what would you have done, in my place?