An Amtrak train leaves approximately 5:30 pm from the Dearborn train station and arrives at the Ann Arbor train station in just over 30 minutes. I am located just several blocks away from the Ann Arbor train station.
A train then can leave the Ann Arbor train station that night at 11:30 pm. The Ann Arbor to Dearborn train ride is only 30 minutes.
The round trip cost is $20, but if you are a Triple A member it is only $18.
You might want to use this train schedule to come to the massage groups that start at 8 pm on Tuesday and Saturday nights. Prior to the massage class you can walk from the Ann Arbor train station to any of the various restaurants in downtown Ann Arbor, and then walk over to the massage class. After the massage class is over you can hang out at the AUT bar, a local gay bar, or coffeeshops in the area until time for you to get back to the train station. Everything will be within walking distance.