This wolf has a mutation or secondary mutation that causes blindness! Unfortunately, she can never lead the pack, participate in training, become an apprentice or perform a role.
Whisper may be blind in this realm, but let that not fool you, Whisper is in a constant state of communication with the lunar realm, she walks amongst the spirits residing within and speaks to them; taking advice and spreading it amongst her pack members (rather they choose to listen, or not).