It does look like she is stressed from over watering but your soil is looking dry so I'm not too sure. I'd say they will likely plug on tho. The bottom leaves are done for but leave them for now. It could possibly be from a variety of other things, but I'd just focus on further growth and making sure your water is in a good ph range and that the soil is drying out between watering to allow for oxygen to get to the roots and make them grow out in search of moisture. Big roots equal big nugs