Victoria
You should be prepared to answer questions about the care you give, especially in regard to areas that you have problems in regard your PIP claim, for example; preparing food, washing and dressing, also that you are providing the 35 hours of care a week that is required for you to receive CA.
However. I would not raise the subject yourself as it will invite questions that otherwise might not be asked. Receiving CA and PIP is not a specific problem unless it directly contradicts the reasons you are claiming PIP in the first place.
Gordon
Nothing on this board constitutes legal advice - always consult a professional about specific problems 
