That's a genetic herm. When they show in the first 3 weeks of flower they didn't become herms, they were already, genetically, going to do it. I'm not surpised by a Barney's Farm herm, they're pretty rampant now with crap gear, and make no apologies for it. Sad that a company that use to do quality has fallen so far. They just churn out beans so that Basil Bush can put them into every store, every website, every type of distributorship they have and make fuck tons of money.
I'm sorry you had this experience, and I hope you're reporting the herm on every site you visit. Barney's will never address their issues beyond anything other than, "cannabis seeds are not allowed to be germinated" and that's it.
I know it won't help you get back on schedule, but I can toss you some seeds if you need them, just send me a dm. I don't do fems, but I do have gear that at least finishes 7-8 weeks. I have some auto beans that were gifted to me if you want to do a quick 60 day run of those and at least get some harvest.
Let me know.