No, she can't. J-20 is a multi-billion dollar hangar-queen showpiece program meant for display purposes only.
Well, not exactly. Every once in a while, someone has to tow her out of the hangar and drag her to the sky. You are not giving enough credit to the pilot in the tow plane!
Also, what about all the CG geeks who paint vortices around the planes? You need to give them credit too.
And... For all you parents with little kids, you should stop feeling proud of your kids. Since your kids are still young and they haven't shown any ability to do real jobs, you can never be sure that your kids can be complete failure when grown up. Thus, it is completely premature to be happy for and be proud of your kids.