It has mismolted, to a degree. It is probably too late, because it hardened like that and she wont be able to use them this instar like that, but you can mist her with a lot of semi-warm water and let the left over exoskeleton soften, then gently pull it off of her...
If u are willing to hand feed her every meal, until she molts, most likely her next molt should correct this...if u don't want to deal with her, you could humanely kill her (whichever process u deem fit) or offer her up for sale to someone who could give her the special attention she would require...
All the best,
Andrew