Some of the theories here are ludicrous... especially about the SG.
Security Guard would be in cuffs if they had anything on him. My guess, he is only guy that recently worked with Danielle and has a rap sheet or something that would make him blip on their radar. I would imagine they have zero evidence placing him with her on the day she went missing and the fact you're all reading into it, is bothersome.
Secondly, occam's razor says she parked her car at her apartment. The cops not being able to confirm this, is because the cops are being insanely quiet about what they know. Why? I'm not sure. There is no telling why they can't confirm this information, but it does not bode well. I have little respect for Chief Nebus and his keystone cop department.
Thirdly, lets look for a second at the people Dani had her in life. I am from the area, and she is not very far removed from some messed up people <modsnip>. Now, granted, Dani could be the person who these people look to for support, but life is much more complicated than that. Truth is, Dani was not as well to do as all her friends are making her out to be. She lived in an apartment complex known for crime and was single and thus vulnerable. I'm not saying she is a bad person, I'm just saying, her life as viewed through social media is viewing it through a filter.
<modsnip> I don't understand why no one in Dani's immediate circle isn't demanding more of Law Enforcement and talking more with the press. Her FB page and 'findani' website are devoid of information relating to bringing her home. I get that morale is important and feel good stories and vigils help keep the faith, but it feels like the public at large is ambivilous to what has actually happened to Dani.
The public needs this information so we can bring Dani home and bring justice to those who did this.
The public needs this information so it doesn't happen again.