So, again, a quick version: scary films, quad bikes, jumping horses - all stopped - in an effort to get her to relax and calm down - and let things go over her head.I remember your original post :)
You say that Mollie has a risk taking personality so perhaps it might help if she had one area where controlled risk taking was provided for in order to let that side of her personality be catered for but, in addition, provide the relaxation encouragement in order to balance it out.
Obviously you know your daughter better than anyone :) but it may be that, for her, she does need a little bit of risk in her life. If you could find a compromise where she feels that her love of risk taking is fulfilled - but as calculated risk not "devil may care" risk she might find it an outlet for that side of her personality. My own worry in that situation would be that, if she doesn't take any risks at all, she might just decide to take one huge risk that could have disastrous consequences.
Not convinced that I have expressed that very well but, hopefully, you will get the gist of my thinking :)