i did it when i was single. actually, it was the best way to make ends meet, provided i pay back my loans. i'm married now and still in school but am confident i could have paid them back single.
fill out a FAFSA and contact every single women's support organization in your area. some of them have grants etc to help out. you live kinda lean but honestly, if you're going to a brick and morter college you get all sorts of perks like free lunch on campus at least once a week (if you don't mind dining with christian youth groups
) gym membership, etc. also, the school i go to has a childcare facility. there's usually student family housing which is dirt cheep. just put yourself on the wait list as soon as you're enrolled. you probably qualify for grants as well as loans.
call up the financial aid office and see what they can do for you. every state also has a daycare assistance program. i just had to give them my class schedule plus a note from my profs or a copy of the syllabus saying how much out of class time i was expected to spend working. that met their 25 hour a week out of home quota and i was able to get assistance with 60% of the daycare bill.
in the beginning vocational rehab paid for my tuition and supplies. i have a documented disability. if you have nothing against state welfare programs check into it. they seriously gave me a full ride to college because i had been depressed in high school.