Income is the consumption and saving opportunity gained by an entity within a specified timeframe, which is generally expressed in monetary terms.For households and individuals, "income is the sum of all the wages, salaries, profits, interest payments, rents, and other forms of earnings received in a given period of time."
Hajj is prescribed for both men and women in Islam and is obligatory one time on anyone who is able to perform it.
If she is not able to perform hajj (because she cannot afford it, because it would cause hardship, because she is physically unable to, because she cannot get a visa, or for other reasons), then it is not obligatory right now.
Sometimes we are not able to do things in life because of our circumstances, and this is part of life. We are not responsible for the things we cannot do.
As the Qur'an says, Allah does not intend to burden us!
If she is not able to go, it is good for her to pray for Allah to grant her the opportunity to go in the future and to have the intention to go if it becomes possible. How often are prayers to go to hajj answered!
If her circumstances change so that she becomes able to do it, then it becomes obligatory.
However the intent behind Islamic law is that everyone who can perform hajj does so regardless of whether they are a homemaker or not.
If the income of the father is mixed between lawful and unlawful, then it will allowed for his children to take what they need for their lawful needs with the intention of utilizing the lawful part of the income.
If the whole income of the father is Haram (Unlawful), then it becomes forbidden for the grown up (Baligh) children to use such unlawful income.
If you are sure that a part or percentage of the income is from unlawful source, the situation can be :
A. If you know the percentage or quantity of the unlawful funds, then you must take that unlawful part away and give it back to its real owner or if the real owner is unknown to you then to give it as Majhool Al-Maalik (funds of unknown owner) which is given to the Marje' of Taqleed to distribute it among the poor on behalf of the real owner.
B. If you do not know the exact percentage of the unlawful money or items, but you estimate it to be less than 20%, then you must pay the Khums of the whole amount, which will make the remaining amount allowed.