is she done streching or can she be taller?

Typically the stretch ends around d18 to 25. Your plant is then solely focused on bud production at this point and will switch gears fast and starting searching for pk for flower production. Your next step I'd advise is the lollipop everything under your bottom colas top bud. Create somewhat of a skirt on the plant so you can create more solid buds and less larf.

If she's a photographer then she still got alot of growing to do but u control that depending when u want to flip to flower. Once u flip to 12 12 , that's it she'll be focusing more on bud production. Best of luck 👍

One more thing... sorry... Since she's a photo, even if you're growing indoors (are you?), I think she's got a LOT of growing to do... photos are usually much taller than autos which I grow....

I grew an auto (Tangerine Dream) that was only supposed to get to be about 100cm tall. Those ladies stretched until about 7 or 8 weeks into flower but then the strain is sativa dominant.. I was having to LST them right up until about 2-3 weeks before harvest because they were wanting to break through the top of my tent! Having said that, however, Northerlights are indica dominant and therefore don't achieve the heights sativas do... Since you don't have a diary going, we really don't have a whole lot of information on which to base our advice! How old is she? How tall is she? What nutes are you providing? What medium are you growing in? All these things can make a difference - so my FIRST piece of advice is to have a diary going for your grows... it will help us help you! Just from your photo alone, if you are concerned about her getting too tall, you can always do some LST which will force her into expanding her width instead of her height - and, although it doesn't look like you need it, will allow more light to get to lower bud sites. When I started my Tangerine Dream grow, I planted 5 seeds... 1 didn't germinate, three took off like rockets (one of which never produced even one trichome and I pitched it) and one was truly a runt... but I LST'd all of them early on. The runt turned out to be a COMPLETELY different strain (still don't know what it is) and it is indica dominant and short - about 60cm ... but what my LST did for her was to make almost every single bud as fat as the main cola and it's going to be one helluva harvest when I chop her on Monday. Good luck with your grow - start some LST, start a diary and enjoy the grow! Happy 420!

Not much more normally plants stretch a lot the first 2 weeks after that they slowly stop, if she continues growing its slightly