There is a product called GHE ripen
It can be used to finish her quicker when bad things like this happen.
I am not sure if it would be worth using at this stage, may be better to chop them now. Because they will not be concentrating on putting more weight on, they will be concentrating on making seeds now. Even the one without bananas will probably have seeds deep inside her buds.
Your weight will suffer but there is nothing to be done about that now.
I had this problem once in a perpetual grow and I had 3 lots of plants in different stages, the hermies where not as badly seeded but the crop next to them where fully seeded and the ones next to those I killed to be safe.
Its a painful time when this happens.
If you do use GHE Ripen then do not recycle the medium. Throw it away after.
No doubt the stress of the bleaching has triggered the plant to turn hermie.
You can still smoke the buds but it will be a task removing all the seeds. Just roll your fingers over the buds and apply pressure, you will feel them between your fingers. Probalby easiest to do this when dry. If its really badly seeded then I suggest making hash out o them either by some form or extraction or by bubble bags. You can get lots and lots of resin fro them and even the leaf that has trichomes on them. The hash will be very strong.
Good luck with the harvest.