ok first off ill start with your last question... NO there is NO way to speed up flower time, if the breeder says it takes 9-10 weeks to flower it will take 9-10 weeks.
as for the freebies there is no way to tell for sure... as Grower13 asked what kinda seeds are they? do you know the strain? do you know if they are reg or fem seeds? if reg seeds theroreticaly the chance to get a female should be about 50%, if feminized seeds its closer to 95%, with Feminized seeds there is still a chance that it will either be a male or a hermie, small chance but most of us whom have been growing for quite a while have run across a male or hermi from a FEM seed, it happens and theres no way to tell other then planting the seed and growing out the plant, by the 2nd week in flower you should know for sure whether it is a female or a male or a hermie.
females should NOT produce seeds on their own, just like a women cant have a baby on her own without a male to contribute his seed (pollin in terms of plants) IF you do get some seeds from a female plant and there are NO males around to contribute pollin then there is a chance that the plant is a hermie, most likely a late stage hermie since the plant appears female and has been grown out till harvest, late stage hermies usualy look female until about the 5week or later in flower when the buds start to grow male flowers inside the buds thus pollinating its self, keep an eye out for little yellow banana looking pollin pods, now if the hermie is an early stage hermie then youll notice the male flowers growing typicaly on the lower 1/3 of the plant while the top 2/3 is producing female flowers.
you shouldnt have any problems with the seeds you ordered or the freebies if they came from a reputable breeder. but words of warning, alot of us around here simply toss out the freebie seeds since the way it typicaly works is a breeder develops a new strain and release the seeds as freebies to "get the word out" so to speak. i personaly try the freebies and if its not doing well i just get rid of it, but some last till harvest and if they dont either produce enough or the potency is low for my liking ill quit growing that strain and throw out any seeds or clones i may have of it.
all in all there is really no way to know for sure until you grow the plant out, just like you dont know what your child will look like until he/she is born/grows-up. thats part of the whole adventure of growing. good luck and much green mojo on females and quality bud!!!