Hi there fellow grower I am new to grow diaries but a fairly experienced cannabis grower. I am curious on if you have any food in that soil or if you recently have fed her? She is looking very deficient and could use some feedings.
Judging just from the picture it could be deficient or also a poor watering schedule if the plant dries out to the point where leaves are wilting downwards for too long the plants will also show signs of deficiency like problems.
As far as pests go if you can't see any white bugs crawling or jumping around in the soil when you mix up the top soil, or see any small creatures on the underside of the leaves, then your usually ok!
Hope this helps! ✌️