Serana's acting like a Hold Guard when I don't have a bounty.
I don't know how it happened. I think it might've been when I told her we should part ways in the Soul Cairn (Completed the Dawnguard questline long before this happened, so don't even go there), or it may have been when I had her with me when I started "Purity" with both Farkas and Vilkas...
I can't get anything out of her other than "Yes?", "What now?", etc. The game won't pull up her dialogue options, so I can't ask her to follow me.
I can't load up a save from before it happened. It was already too late by the time I realized. The Unofficial Dawnguard Patch from Skyrim Nexus didn't work, nor did using console commands.