Thank everybody for your comments and recommendations.
Using an older dog, unfortunately won't be my case. My old Korthal died last April. I only got that new pup.
As you have recommended, I did quit a few simulated stalk with her. She did very well.
Used my 17hmr during the last 3 simulated stalk and she stay put next to me and did not react to any shot.
So I took her for her first stalk. I kept her on a long lead attach to me. She did follow me very well, stopped and I stopped, sit, waited. She was good.
Crossing a big field, we must have flushed about 15 hares, she only pull on the last one

.
I think I'll keep her few more time on a long lead. Then goes on the 20m training line.
She was not perfect but she was steady for her first stalk.
I'm confident she will become a great stalking dog.
Here is a little photo of her with her first roe
My only issue was: gralloching a deer in the middle of a field, with the nose of my dog in it, was not helpful

