Is the daughter, who has repeatedly tried to contact her father who is evading financial responsibility for her due to his divorce from her mother, sinful? And what is the ruling on his guardianship of her marriage if she wants to get married?

Filial piety towards parents is obligatory, and it is not abrogated by the father's negligence in providing for his family. Children must treat their parents kindly through all possible means. A phone call is not sufficient; rather, a visit is necessary if possible. If the father is far away, then contacting him by phone suffices. The guardian of a woman is her father, even if he is absent. If he refuses to marry her off without a valid reason, and the suitor is suitable, then he is considered to be preventing her marriage (عاضلاً), and her guardianship transfers to the judge.