<snip>There is simply no way a visitor can "walk into" a public or ICU entrance, or "walk out" of a public or ICU entrance, escaping camera detection-- particularly after hours, when door security tightens.
With 100% confidence, I can state that a camera at the entrance of the ICU should have captured her entering the unit. And exiting, at the time she left.
<snip>
Dina should be very, very worried that there is nothing that establishes where she was during the time of Rebecca's death, other than a generalized location of her cell phone.
Dina has to be on there entering AND exiting at least once. Or exiting AND entering. I believe she exited some time between 8-10pm and did not reenter until the next morning. However, she could have entered sometime in the middle of the night. Jonah must know if she was even there between 8pm and 1 am. Even if she was, I guess it's possible Dina actually went to the mansion between 1-3 am.