.

Well I don't dare offer any advice, rather tricky questions, just some thoughts...

If she's taller than the others she would be nearer the lights, re:
it could be heat stress too, but if all the rest of the plants are fine it's probably not that
.
Maybe measure the temp right at her top.
She may also have a higher demand for nutes than the others.

Personally, I wouldn't worry about alternating nodes, if they're showing sex, they're reaching sexual maturity.

Wish I could help more, I'm sure someone with more expertise will give some better advice.

Apart from that, they're looking nice, and I'm sure you'll get some nice bud there :thumbsup: