Yes, I did get 10 yr multiple entry visa for my mom. Sponsored my mom for visa in late 08, Dad no more, and was very worried since she is a widow and couple friends mom's visa was denied with similar circumstance. I'm on AOS, also used AC21. Did included all the documents, including copy of EAD, 485 RN and EVL from current employer. My mom works for central govt, in addition to docs I submitted she also took a NOC from her office and also a leave approval showing 3 months leave and copy of document showing property (only home) ownership in India. But nothing was asked/reviewed except a couple question about the sponsor(me) like work, duration of stay in US, last time in India, etc and was issued a visa. Ensure the paper work is done correctly and placed in order. The better the paper work, fewer the questions. Good luck.