What's wrong with my girls?

The clawing you're experiencing is from too much nitrogen, in bloom your N should go down and P-K up, don't stress yourself at all in regards to the little burn on the tips sometimes cal mag will fix that but it really won't affect the quality of your buds. The leaves with the spots check the underside of the leaf and make sure there aren't any mites under it, if not its from the plant approaching the end of its life and drawing nutrients from the leaves which causes the nice lil shades of purple you're seeing also. If the leaves were drying out and dying then its your NPK. The buds still look very immature for the leaves to be that color IMO but its natural fading. your plants are healthy and well fed from pic #5 where the leaves are pointing to the sky. If you suspect light burn raise the light but if you had a heat issue the leaves would fold in like a taco.

If the leaf tips are burnt that is indication of either an under feed or an over feed if the yellow leaves start at the bottom and work thier way up its most probably nitrogen that she needs nitrogen is a mobile nutrient within the plant its in constant use no matter the stage just up her veg feed and should be okay in the next week

Potassium deficiency maybe