Must a sister take her share of her deceased father's money to prepare herself for marriage, or is the brother fully responsible for her preparation, taking into account that the amount may not be sufficient?

The obligation for a brother to financially support his sister is a matter of scholarly disagreement. The preponderant opinion, in our view, is that a well-off brother must provide for her reasonably. However, if she has inherited wealth from her father, her brother is not obligated to provide her with a dowry from his own money or to support her financially, due to the condition of poverty for the obligation of support. If she is wealthy through money or earning, she is not entitled to financial support. If her share of the inheritance is insufficient for her needs, her brother is only obligated to supplement her needs. As for preparing a woman for marriage, the general principle is that it is not obligatory upon her guardians, but it is an act of kindness for her well-off brother to prepare her to the best of his ability.