Thank you for posting.
I am sorry to hear about your daughter's fear increasing. I am not sure if there are a few tips that will help her growing fear. I would suggest that you call special assistance at Virgin Atlantic to let them know you are flying and your daughter is a nervous flyer. They can let the cabin crew know so that they can keep an eye on you.
Their number is:
0344 481 4455
Also, please email me directly and I will send you some audio clips to listen to [email protected]