Honestly mate looking closely at the pics it does look to be a possible start of white powder mood infection which could also be slowing her down from fully flowering... Definitely some odd growth there at the bud sites and surrounds leaves... What medium you using? Lights? Environmental factors etc... A little more info maybe may help what are you currently giving her for nutes at this point? If you haven't allready start with some bloom boosters maybe give her a head start...also if she's suffered and has had issues that can extend things a bit longer than normal..: at least its a good stress test on this strain, look on the bright side a challenge has presented it self to you and now go Conquer that lady and show who's boss! What's the lightening schedule? I've had plenty of autos not flowering yet at day 30 and just starting pre flowers... There is hope yet for some home grown dank
sending good vibes your ladies way