Sick flowering sativa plant :(

My girls been flowering for 2 weeks now, but she's showing signs of idk what, only a few leaves are affected the majority seem to be healthy green with just the very tips bent down abit, here's the deal. I took her in from outdoors but my idiot friend did it for me cause I was away at the time and he transplanted it instead of just taking in, I heard transplanting is bad during flowering, he put it in a pot and watered it and it drank up that water in 4 days so I figured it was healthy, He put it in a 7 galon pot and when it drank the water by the time I got home I watered it with advanced nutrients 3 part at a quarter strength I should have used, and some ionic boost, the plant isn't drinking the water this time around and it's scaring me or it's taking it's dead time, it's still soaked like you can feel water in the first inch and I only gave it 2L of water, 1l of the 3 part and 1 litre of ionic boost, a few leaves are showing brownish spots and curling in, but it's like 5 of 70 leaves on the plant and all the new growth is fine, someone help!
 

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