Few of the buds never developed trichromes or got sticky

A question of a fellow grower:
I’m asking for a friend who grew outdoors, but a few of her buds never developed trichromes or got sticky. I thought she harvested too soon, but she said all other indications were they were ready i.e. yellowing leaves and fan leaves were dying. Any ideas as to what could cause this? All three plants were the strain “God bud” which she grows every year to use in a topical balm she produces. Any insight is appreciated.

Can’t win em all mother nature made that plant exactly how she wanted it if she’s been using same strain for years seems like she is well experienced with it so ts probably nothing she did maybe an animal did something to a branch …something that’s being over looked pest wise …or a st a mutation I’d say