Daughter in year 11 no plans for future

My daughter is about to undertake her GCSEs and we have just been accepted for an EHCP but no draft in place at the moment.

it looks as though my daughter will fail her GCSEs as she refuses to do revision homework or go to class. 
Everytime I discuss leaving school she blanks me out and there are not many options anyway.

i think failing her GCSEs might be good so she can have a purpose going to college but for now I do not have a clue where to turn or what to do!!