I wasn't saying you should transplant now. I would, but I've been through this a few times and am familiar with how delicate of a process it is.
Looking at the tape, my suggested depth lines up with Deb's suggestion also. Being a new grower, you can wait until you have good signs of roots at the bottom of the pot, but the plant would do much better if planted deeper.
If you're not comfortable doing it right now, please don't do it. I'd hate to be responsible for you losing her by pushing you into something you're not comfortable doing. A weak plant is much better than a dead one.
I only offer advice, but this is your grow and you have to be the one comfortable with doing whatever needs to be done. Again, you don't have to do it right now, but make sure you bury most of that stem when you do.
Suggestions are just that, not a command...