I would move her ASAP and start with the Fix it twins prima and mela fix
This fish if it was mine I would use a small tank and keep her in it for a few weeks.
To stop this happening again several actions can be taken
But let us first examine the cause.
If we agree that it is due to the male chewing her to force her to spawn or to remove her from a cave. We need to understand the reason for this action. Accepting that all male fish once they reach sexual maturity will try to spawn, it can only be if the female is not willing or not ready to spawn that will make the male show aggressive behaviour towards her, a sort of sexual excitement.
Some species are more prone to this behaviour. Any one who has tried to spawn L134 will know this.
Extra caves may help as she can find a cave that will be to her liking and in general males will not try to force a female to spawn if she is in a cave that the male has not selected for spawning.
From my point your tanks size is possible the main cause of this problem. Do the L201, s share this tank? Do you have “Line of sight” markers ie stones that are distinctively different to the substrate? The later will help in establish territories for the male. A bog wood tangle is also helpful to make a fish feel safe and happy.
My opinion is that Hypans are more aggressive during a spawning due to the very small size of the groups of fish in the wild. I believe in nature they are very localised and only found in very small amount. This aggressive behaviour during spawning would force females to accept the male and thus this gene that aids survival would become a dominating gene. In nature should the female become injured this would heal as the area of water that they are in is large and fresh with very little bacteria.
I have my group of 6 x L201, s in a 18” cube and have seen no aggressive behaviour or chewing, having said this with feeding only every 3 or 4 days and daily 5% water changes, should a female have been chewed I would not expect to see the wound spread.
I have had L030 chew a female very badly and with a treatment of the fix it twins I have had the wound clear up in a few days.
So to conclude
Treatment would be the fix it twins with regular water changes and good housekeeping.
Prevention would be rearranging the tank and maintaining a regular water change and feeding program, good housekeeping to maintain a clean and healthy environment.
I would also once I have every thing under control and maybe a larger tank, add to this group as I have found that the option to select from several females can reduce the aggressive actions of a male.
I do know of one member who brought part of a group of L411, s from me and had no spawning but when he added the remaining / missing fish the group performed on a scale that was amazing.
One item I have found that helps with keeping a good environment are Almond leaves.
Joes Zebs is about the best place to get them on the net
I trust this helps and