I agree, you will need to retain competent counsel. You may, depending on the jurisdiction in which you live, be able to request the court to appoint you an attorney. Unless your aunt and grandmother have full custody of you, they may not have the right to object to your emancipation.
My answers are not intended as anything more than an educational response to generic questions posted on this site.
As I understand it, an attorney ad litem must be appointed to represent you even if you were to hire an attorney (I have not researched this, it is just my recollection of the process).
Your mom would consent, so have her file it and serve your farther, who would then choose whether to contest it.
Your mother can prepare the forms, which you can get from the Tarrant County Law Library, and she can sign the petition before filing it.
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