I would let her go longer than you planned to see what happens. she might bulk up on the actual buds more towards the end of her life. If you were planning to harvest based on breeder recommendation, those are generally only true under the absolute best conditions. Most of the time it takes an additional 2-3 weeks after the breeder recommendation for the plant to be ready. Does the plant have any trichomes at all? I ask because I don't see any in the pics. If it does have some grab a 60x magnifier and look at em. If you see amber you are getting close to harvest.