Norhtern latitudes have a shorter timeframe to work with than the lower latitudes. Some sativa dominate strains can take 3-4 months to fully mature. If yours is an 8 week strain, then all the better.

TLC is tender loving care. Don't abuse her with additional transplanting, changing schedules, overwatering or underwatering...

Didn't look to me like full-blown flowering, more like preflowers. But, I haven't done an outdoor grow in over twenty years.

Indoors, were I to put a damaged plant directly into flowering (12 hours of darkness) the plant wouldn't get a chance to recover from the trauma of losing a cola, and would likely be stressed, stunted and would likely become a hermaphrodite. Even a couple of weeks of 14 hours of daylight would give her the chance to heal and continue her journey without further problems. Perhaps a little bit shorter, but healthy.

Would follow the manufacturers recomendations, and use the correct nutrient for the appropriate season/cycle. Don't push her hard with nutrients or additives. Perhaps half-strength for the next week or two, or until new growth is seen. I've not used the BioBloom nor the Top Max specifically, but the fish fertilizer I can't use in veg. (even the deodorized stuff is too stinky to use indoors) I do use a humic acid product called Soil Syrup (leonardite) which is good for root stimulation and growth. The Top Max is likely similar, and should be fine. Your plant looked fine before, I'd keep doing what you were doing.

seventhchild: Care to elaborate on your negative rep, and the reason for it? Not that it really matters, as rep points do not determine how I answer posts, but am curious why you bad repped my post above. I've re-read it and do not find it at all rude to the OP. Do YOU feel slighted or feel I was being rude to you?