one... depending on your age, you can look at scholarships for returning students. i know this is a rather general answer, but there are specific scholarships focused toward each major. do a general search for them on the www. whatever you do, don't pay for one of those sites or books--you'll get no where with those. also, look at grant sites or scholarship sites for returning students.
if you have been on your own (that is to say own taxes--not claimed by anyone) you can probably qualify for your own student loans without placing your mom into any more debt. i know that you probably do not wish to take out loans, but this is probably one of the best things you can do if you are seeing that you're not going to 'make it' any other way. another thing, depending on your state, you should be eligible for your pell grant (that is to say if you've been 'independent' for a few years) and for a higher education award. again, i don't know how this will work in your state.
you may also want to look into other living options when you choose a school. a friend of mine took a job as a RA his freshman year (he lucked into that) and his housing and food were paid for. As he progressed up the ranks, he got a decent position this year (he's a senior) as a director and he gets a tuition waiver too. i know dorm life is not the best--but if you really want to go and to cut down on expenses, it may be one of your best moves if you seek the route of being in housing.
also, don't underestimate workstudy. it's a drag, sure. but, in the long run you do make contacts with university personnel and believe me..i've seen some work study students advance to managing summer seminar offices and coordinating summer programs, as well as other semester events, just through the contacts that they have made.
if i had an idea of which school and what major focus, i could do a quick peek into what is offered via scholarship. you may also want to post in the higher education forum. there are some grad students and others who work in higher education who may help you with the search. i don't know how much that it's monitored over there, but they may know some ins and outs. and if you want to talk loans or other ways of funding, they may have some ideas.
best,
rob
ah..japanese... i glossed through your post...
here are some quick links i found (some may be university specific):
http://www.colorado.edu/ealld/atj/Bridging/scholarships.htmlwww4.ncsu.edu/~fljpm/program/pr03.scholarships.html