What are the responsibilities of a married women towards her parents?
The responsibilities of a married woman towards her parents are like those of any other woman. The rights of the parents remain both before and after marriage, but obedience to the husband takes precedence over obedience to the parents if there is a conflict.
If the command of the parents conflicts with the command of the husband, then what takes precedence is the command of the husband. But the Muslim husband and the Muslim wife must strive to avoid conflict with the parents, and strive to achieve harmony between them and their parents.
One of the matters to which the married woman should pay attention concerning her parents is that she should strive to visit them from time to time, and give them appropriate gifts even if they have no real material value. She should try to avoid letting her children’s misbehaviour annoy them when visiting them, and avoid telling them about marital disagreements.
Shaykh Muhammad al-Duwaysh
If her parents need money and she is able to spend on them, then it is obligatory for her to spend on them as much as she is able to. If she does not have money of her own, but she intercedes with her husband, if he has money, to help her parents, then she will be rewarded for that in sha Allah. This is part of honouring her parents.