This is what happens to a female when you have a very rough male or even two males fighting for a cave, the stripes will regrow but not always straight.
maybe some of this photos will help they are old but would still be usefull
first photo same female as above
your fish has some characteristic of a male like the thicker check bone but some older females have this and a straight pectoral fin but from the size of the fish, with little odontoids on the fin and ckecks it could be a female.
heres the males if you notice the heads have an arrow head shape

this is the same male above it used to have a solid bar running across his head

same male but a couple years older
another sure way is to vent her

all photographs above are guaranteed breeders