Female Betta Help

[beanz8]

Please see http/www.fishforums.net/index.php?/topic/386939-help/page__gopid__3251411#entry3251411

There are pictures and details in my post - help me save her please

 

[beanz8]

Today she has sloughed off the white patch, I dont know if this is a good sign or a bad sign

Please does any one have any ideas.

Ph 7
ammonia, nitrite and nitrate all too low to register in my test kit, I do 50% water changes everyday - she has been on her own for 3 weeks due to regrowing her tail.

She is on Myxazin and aquarium salt...

What is happening to her?

 

[FishBlast]

That looks terrible... her flesh seems to be showing... some kind of rot?

 

[beanz8]

This is her yesterday