Elvira - the car
OP stated early on this was a new battery along with the alternator.15mA draw does not add up to going from 12.6V fully charged to 12.1V or 12.2V within 10-12 hours. What do you get when you disconnect the battery from the car completely? Let's eliminate the battery as a possible source of the problem.
That said, even a new battery can be bad out-of-the-box. Shorted plates would self drain a battery. Debris in the walls between cells could conduct, OP should try an internal resistance meter to check the internal resistance like one of the SOLAR B-something meters.
I'm thinking his sticking door/trunk actuator MAY be causing the aftermarket alarm to keep resetting something and waking the ECU up constantly.
If the actuator sticks in the powered open/unlatch state it may be pulling current without realizing it. Maybe. If I understand the OP description of the sticking actuator.
Maybe the remote start is stuck in some state thinking it is frigid cold outside and keeps trying to start the engine/spin the starter!!!!