Help with Misdemeanor Case in Maryland?

Okay. So here are all of the honest-to-God truths. My best friend and I have known each other for 13 years, but our relationship has been falling apart for the past 2. She started doing drugs and drinking (we are both 20), and I feel like I don't know her anymore. We went shopping two days ago, she didn't have any money, so she decided that she was going to steal some stuff while in the dressing room. Being as naive as I am, I thought that I could reconnect to her if I took part in the petty theft, and the worst that could happen would be a civil case between us and the store. Boy was I wrong. We got caught because apparently she has stolen from that same store before, an officer came, and wrote me a citation for a misdemeanor of theft for under $100 (I am thanking the Lord that it wasn't anything worse). I know it was completely irresponsible and absolutely stupid, when the whole thing was happening with the officer, I was balling my eyes out and having a panic attack because I couldn't believe I would let my morale go and stoop so low. Back to the case issue... I utterly cannot afford a lawyer and cannot afford to be convicted. This is the first time I have EVER been charged with anything and believe me, it will definitely be the last. I am begging and praying that the judge (who I will be seeing in a week and a half for my arraignment) will be gracious enough to allow me a pre-trial diversion so that I can set things right and not have this go on my record. I was wondering since this is my first offense, I am going to pay restitution to the store when they bill me, am willing to pay a fine, do community service, and possibly even do probation, how likely am I to successfully get PTD? Like I said, I live in Maryland, so I don't know how or if that affects my eligibility. Any and all help will be greatly appreciated and I swear to God that all of this is the truth and I promise that I will never do anything ignorant like this again. Thank you all in advance.