Hello.. Hope you are well..sumthin is eating away at her!!.. Check the underside of her leaves for bugs.. Identify the bugs then contact ur local hydro shop and ask if they stock either natural predators or an organic spray(neem oil).. This shud help reduce and defeat whoever the culprit is.. Stay safe n gud luck with her.. šš
That's pest buddy sorry to say. Check under sides of leaves around base of stem and all over the lady really. But that's bugs or water drops from you spraying it during high light.. From the looks of it.. It's pests.