No. 3 Louisville women withstand 2nd-half rally to edge UNC
"Destinee Walker missed her seventh straight game, and her 10th overall this season, for the Tar Heels as the junior recovers from an unspecified hip injury. However, Hatchell said she hopes the redshirt junior guard can return within the next 10 days."
That article is from January 4 and obviously the hopes for a recovery within 10 days didn't pan out...or there was a new injury? That's as far down the trail as google got me.
Just checked the UNC board - speculation is that she was medically cleared to return this year but chose not to in order to preserve a year of eligibility.