As already said by many - i would try and talk her out of it - i also understand why she wants to do it,
It seems to us that self image has gone wrong, instead of wanting honor , respect for self and others, understanding, love and everything else that is worth while having - we have sold our self's to the money makers that say we are not good enough and there for need to "fix" it all.
bit like the wish you were here song of the great pink Floyd,
How long will we ( as a society ) be blinded by this rubbish and continue to hurt others and our selves by cutting up our bodies -
To my daughters ( if you ever see this post that is ) Your beauty comes from the things you hold dear not the bits you can cut off or modify - Do not let yourself ever be fooled - you are worth so much more then a doctors car payment, and the same goes for my sons,