So, let me get this straight.. you got into medical school.. and you want to drop out because it isn't "good enough"?
Wow.
First off, all the medical schools in the country will give you a wonderful education. Second, you GOT IN. I don't understand what the damn problem is. Most would KILL to be in your position.
I am sorry that you had to drop out of your second semester because of family issues. That's incredibly unfortunate. But given that fact, I doubt that it would qualify under the "good standing" that was quoted in a letter someone received about changing schools. You'd need to re-take the MCAT, reapply, and see what happens, and honestly, I feel that is way too much of a gamble.
Having to retake MS1 would probably suck, but either way you'd have to do it at another school on the off chance you got in, so I say suck it up, retake your first year, and then continue your matriculation. Otherwise, if you don't listen to the myriad of people saying to thank your lucky stars you were admitted to medical school, you'll probably be sitting at home next year with no acceptance letters realizing you just ruined the wonderful thing you had. Beggars can't be choosers.