All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His Slave and Messenger.
The husband is obliged to provide his wife with the food, clothing and accommodation according to reasonable terms. Therefore, the wife is not obliged to provide for herself [or her children] from her own money even if she is wealthy unless she does so out of her own proper consent. If she does so, she will get the reward for it, and this is a sign of her good conduct and kindness. For more benefit, please refer to Fatwa 186495.
If a husband leaves home or divorces his wife just because she did not help him in maintenance, then he is absolutely wrong. It is also bad for him to show his wife the picture of his other wife or to show his admiration for his other wife if his intention is to tease her or threaten her with divorce. All of this is wicked and poor conduct.
Therefore, we advise you to be patient and pray that Allaah sets him right.
Secondly, if a wife renounces her right to maintenance from her husband for some interest, and then she would like to restore her rights, then she has the right to do so, as this is considered a gift that is not yet possessed, and so, it is permissible to retract it.
However, the husband is obliged to provide fairly for both his wives and to spend an equal amount of nights with each, even if they are in two different countries as we have already clarified in Fatwa 90663. Hence, you should know that his other wife has a right over him just as you have a right over him.
Finally, a woman is not permitted to travel without being accompanied by her husband or her Mahram, as this is prohibited in the Sunnah as already clarified in Fatwa 83795. Therefore, if your husband does not agree to travel with you, then you should have patience until Allaah makes him agree to travel with you or you should seek a way to bring one of your Mahram men to travel with you. In any case, a husband should help his wife contact her family as much as possible.
Allaah Knows best.