No. Even though JoAnn Shartrand is an experienced matrimonial attorney she will not be acting as your individual attorney in the process. Her role is as a facilitator of your settlement discussions.
You may want to seek the advice of an attorney during the process. It is strongly recommended that you have your agreement reviewed by your own attorney prior to signing, although it is not mandatory.
Normally your attorney would not attend mediation sessions. If you feel you need a higher level of legal support you may want to consider Collaborative Mediation.