Would my actions be considered a transgression against my parents, who neither support nor communicate with me, and would my lack of communication with my relatives constitute a severance of family ties, especially given my siblings' mistreatment of me and my desire for independence from my family through marriage?

One must excuse parents if they do not answer the phone. Traveling in a way that burdens them without necessity or an overriding benefit is considered disobedience (uquq). Financial support is obligatory for the father if the girl has no wealth, then for the brother if he is able. The brother who does not pray and mocks religion must be advised by clarifying the seriousness of his actions. Maintaining kinship ties (silat al-rahim) is obligatory as much as possible, and abandoning them is a severance. A girl far from her family should live in a safe place and avoid solitude. A woman's conversation with a non-mahram (definition) man is permissible with legitimate Islamic guidelines, including the absence of privacy (khalwa (definition)) and speaking in a soft, alluring manner. Marriage is not valid without the guardian's permission, and if he refuses, the matter should be referred to Islamic centers. It is recommended to pardon and forgive the family.