Why don't they release those?
Patience. They'll be released eventually if deemed relevant.
Calls from Kobe's house were available to the press.
Some aspects were made available, but not all. For example, can you tell me the identity of the female or females who needed "medical attention"? Can you tell me what the medical problems were?
I don't care except if an investigation deems them relevant, too, but you are wrong to characterize the calls as "available" implying that all there is to be known about those calls has been revealed.
True enough. Her calls are totally unavailable. Kobe's are for the most part available.
That still doesn't seem fair to me. Considering this girl's past, I'm guessing they might be relevant