Broken main stem

I have a stretched female about 10 inches. Went to transplant it and broke main stem all the way through internally right above the 1st feeder node. Took toothpicks and some taped her up. Exterior couldn’t see damage. I buried it with the broken part underground. Now the plant is 4 " tall. Am I hurting the stem and plant burying it so deep?

Do you have any pictures?