Irvina Booker makes a most unlikely criminal. She lives in constant pain, disabled by multiple sclerosis and arthritis, a grandmother whose limited mobility depends on her walker, her daughter and marijuana. "I never smoked it before I got sick, and I don’t smoke it for fun," said Ms. Booker, 59, who lives in Englewood, N.J. She would not divulge how she obtains her marijuana, but said, "I don’t want to be sneaking around, afraid someone is going to get arrested getting it for me." Like many people who contend that marijuana eases pain and appetite loss from serious diseases, Ms. Booker cheered in January 2010, when New Jersey legalized its use in cases like hers. But a year and a half later, there is still no state-sanctioned marijuana available for patients, and none being grown, and there is no sign of when there might be.