I'm gutted. I really really wanted to Try this strain but she didn't want me to. Time to start over and hope it doesn't happen again. My first hermie and I'm broken.
If it's just the one male pre-flower at the start of flower on an otherwise fully female plant, like it seems on these pictures, they're often totally okay if you pick it off and keep an eye on her afterwards - I know you already chopped her, just saying this in case you come across it again. I've had a few like that and could always take them to harvest regardless, no seeds.