After the first 2 weeks of Veg, she's looking great! After adjusting the light distance and intensity a bit, the issue with the weak and stretchy stem disappeared. Also, the fact that her roots have reached the nutrient rich living soil part absolutely helped with her development. Now she's standing super firm, her stem is stable, her nodes are coming along nicely and thus on Day 17 I decided to top her just above the 4th node. Another day of rest and recovery before I'll adjust the light distance a little more, to bring it closer to the plant.
She also has some mushrooms growing out of the soil - so sweet! When they're gone, I'll add some mulch and possibly a Blumat drip feed system, so the top soil remains a decent moisture level.