Yes, you are on the right track by thinking that your daughter's therapy should be resumed. This will not be making the situation worse; it will be tackling it and thereby help your daughter. All the reasons you cited may well be contributing to the situation. Now all you have to do is follow up on your good understanding by getting her the help that is reuired.
From your description, it does appear that your child is suffering from extreme anxiety. If you read one of my posts above, you would note that I believe that anxiety is an inherited trait (and the recent research in this area supports this view). Puberty can exacerbate anxiety issues. Perhaps it is time to see your family physician - you may require a referral to a specialist in anxiety disorders who treats children. The treatment may consist of intervention, therapy and/or medication. If your child truly suffers from anxiety (which I like to define as "intense distress which can reach toxic levels"), you will not be able to handle this disorder without help. By the way, anxiety disorders are highly treatable. I wish you the best ...