HELP...I don't know whats wrong with my babies...

Can anyone help me.... I have a nice female plant about 4 weeks into flowering and she has started to wilt on the top leaves...Its only happening to top half of plant and the leaves look shriveled, folded, look dry and curl downwards like a claw if u know what i mean..The leaves are really dark green all over, Even looking darker green than rest of plant...Iv'e looked at other threads but i cant find anything like this problem anywhere...
You cant see much from the photo,i aint got a good camera...
Any help would be great cos im out of ideas...

Its definately not heat or over/underwatering

maybe back ur light up off of her a few inches..looks pretty nice tho..id cut those bottom leafs off the bottom 1/3 of the plant tho and she'll have some fatter cola's on top

I cant, the light is as high as it can go cos im growing in a budbox...Do you think it would be OK to bend her over a bit or is she too far into flowering???

Do i remove all the branches from the main stem for the first third of her or just trim a bit??....I havent heard about doing that...(sorry about all the questions,...its my first grow)

Nice one for the advice........I need it LOL

I've had the same problem ....it's from moisture stress due to overwatering. imo . i saw what you were talking about when i looked at the pic ...even though it wasn't great quality. mine have the same problem ...the leaves will stay that way ...I never found the solution to correcting the problem.. besides cutting back on watering it until she wanted it.. are you using a ph or moisture meter

I got a moisture meter that goes from 1-4 and i always wait until the soil is in the number 1 section B4 i water....
This is only happening to 1 plant seriously and 1 other plant but its not too bad on this one.....

When i got rid of the males i had i waited until the meter said they were dry and then tipped them out of their pots to see how dry was the number 1 on the meter and the compost was pretty dry all the way through...

I usually go by the system of....water day---->dry day----->dry day------->test moisture level and water if required...
Is there anything else it could be???

Is it a big problem, is it gonna effect yield??? etc..etc..
Nice 1