Applying I-485 with arrest and petitioner deceased (died)

[jas123]

I came to US on F1 student visa in dec. 2006. My mom applied I-130 in june 2008. Got I-797 approved I-130 petition in june 2009 as an unmarried child (under age 21) of US citizen. I was arrested in Oct. 2008 for Retail fraud theft 2nd degree in Michigan,jailed for 1 day. Appeared in Court on march 2009. Pleed guilty, payed fine, 1 year probation, 3 days community service. Case closed in march 2010. In dec 2011, my mom died of cancer. Now i want to apply for status adjustment. I know my dad (permanent resident) or brother (US citizen) could become my substitute sponsor. But what kind of trouble am I in? What are my chances of getting green card ?