Hi, I am trying to file for a green card for my mother; I am a citizen. She had a tourist visa for 13 years and never broke any rule of stay; max stay was 8 weeks. Now we decided to process the paperwork, but i am currently unemployed (A doctorate student). My husband has a good salary but is not willing to co-sponsor. She has savings that will amount to minimal cutoff (family of 5) and property in her country that can be appraised/sold. Can she use her own funds to support herself? how is it documented? Also, we file jointly all the time. Do I need his signature and can I use our joint tax returns to demonstrate family income? What about my own savings and mutual funds? Lastly, how long should I wait since her arrival to start filing and what forms do I need (ie work permit, advanced parole if she needs to go back while docs are in process) ? I will greatly appreciate any help.