She seems to be growing just fine, altough her roots seems to have some problems. I will try to clean the tank and give her fresh water.
I'm usually not closing the lid on my DWC tank completely, as it's extremely hard to open and close, and i think some light might have gotten to the water, causing the root rot.
For ur roots I’d add around 1ml per litre of liquid nitrogen I was advised to use with plant science and dwc but I have to say ur plant looks pretty healthy 👍