That doesn't look like a very tragic nutrient burn. The soil is a little too strong for her, but she should grow out of it without any problems. I would lower the pH value. For soil grows, a value of 6.2 to 6.5 is optimal. The slightly high pH value can develop into a problem, even if the soil has a buffering effect.
Also, CalMag, apparently there could be a deficiency developing.
Otherwise, the lady looks excellent 🤩
I'm impressed with your topping! 👌👏