I learned SO much with my first grow (am STILL learning with each succeeding grow) - and the REASON I learned so much is that I made so many mistakes! You don't learn from what you do right, you learn from what you do that's wrong ... and from the look of this, I don't think you're learning very much! LOL! It looks fabulous and you should be proud! As the others have said, she will probably stretch a bit more but I grew one indica that didn't get over 21" tall - and she gave me a great harvest - so no worries!
Good luck!