She wasn’t rehearsing, she was placing a short “starter” tear so she wouldn’t look like she was struggling (or failing) to tear it. It still shows it was planned, and not spontaneous.
I would laugh like hell if she was there for the next SOTU address and PRESIDENT TRUMP had the copies made on vellum, that stuff is almost impossible to tear.
HOPEFULLY SHE WON’T BE SPEAKER NEXT YEAR.