My mother refuses to let me wear Jilbab (loose outer garment with no front opening),
because of some circumstances. Now I go out wearing a cape and a veil if necessary, but I do not wear Jilbab. Should I disobey my mother and wear Jilbab despite these circumstances or should I obey her? Please advise me of what is best for my Din (religion of Islam) and worldly life.
You should abide by the Shar`y (Islamically lawful) Hijab, to obey Allah (Exalted be He) and His Messenger (peace be upon him), and this includes the face and hands. It is impermissible for you to obey your mother and abandon Hijab. The Prophet (peace be upon him) said:
There is no obedience in matters involving Allah's disobedience
However, you should gently make her understand the Shar`y ruling, (Part No. 17; Page No. 259) while being polite and tender, you should argue with her in a good way. May Allah open her heart toward the Shar`y ruling. May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.