My mother recently came from overseas and got her green card she came back as she was alone there, and she is 68 and is not able to work, i wander if there is any source to get some financial or any other support for her, as my income is low and I have 2 little boys and elderly husband who is on social security.
Does your mother have a pension of her own, or any assets? Are you or she members of any cultural or religious support groups that might be able to help?
At any rate, it's really your mother's responsibility to find a way to work and earn money, even if she has to do some in-home work. She's still at a young age; she can contact organizations such as Operation Able (if it's still in existence) and get some job training so she can work. If she has medical issues, these kinds of organizations can help find jobs that consider those issues.
Assuming she speaks English, she can contact local libraries as well; some of them have job assistance programs to help her find a job.
You wrote your husband is elderly as well (and you have 2 young children) so it seems as though you have two older folks and 2 children to support. How old is your husband? Is he working and if not, why not?
When do you start your job? Perhaps with two people staying at home you can consider starting earlier, or working a double shift or getting a part time job.
You can also contact your home country's embassy or the organization that sponsored the green card program to see if they'll help. It seems to me that your mother's home country should be the entity providing help, not the new host country.
Qualifications for entry are:
"The Diversity Immigrant Visa (DV) Program requires the principal DV applicant to have a high school education, or its equivalent, or two years of qualifying work experience as defined under provisions of U.S. law."
https://travel.state.gov/content/visas/en/immigrate/diversity-visa/if-you-are-selected/confirm-your-qualifications.html
What kind of work experience does your mother have, and why can't she work in that capacity now that she's here?
Does your mother have any talents that could be marketable? I was wondering if she could make things that could be sold to bring in money. Many older people from certain countries have good skills. What country is she from?
But if I travel there, maybe I can stay a long while in a nice place, with very polite neighbors.