Tough spot to be in, I'm sorry. Your poor pup though...I am not adverse to medication to help. This type of fear will never go away and in most cases will get worse. There is no "come to terms" with a fear of this nature. I would recommend giving her a few hidey holes of her own, crates, where she can get to them regardless of what floor they are on. You are going to need to be proactive and know her triggers, behavior modification can only go so far and I have found in case like this they don't work at all. There is no point in praising her or correcting her, no amount of cookies will help. Stay calm, breath deeply, place her in what she knows as her "safe" spot and carry on as normal for you. No positive no negative reactions from you. If you know something is coming, a holiday, fireworks, etc..you may want to dose her a day or so ahead to attempt to take off some of the edge prior to her going into a full blown panic and needing it more. I wish you luck.