I am wondering if she went there to drop off her dog, maybe to the couple on the 9th floor , so they could get Seven back to her son.
Then she voluntarily took off, to escape some upcoming difficulties, hoping to wait things out and return when things die down?
Maybe LE knows something about that, but maybe they don't know exactly where she is?
It could be that her boss was trying to frame her for some of the financial shenanigans and she was afraid to stick around and get charged so she went into hiding?