Transmission Fluid Leaking problems of the 2004 Nissan Quest

I was driving with my son and the transmission line snapped. I was scared because I didn't know what happened. Thank god my son who is disabled was not in the car. My mechanic said that this should not happen. When I got my car back my transmission is now very sick. I have always maintained all fluid changes at the correct time. My car is not the same. Now today my oil pan was "eaten" from the transmission fluid leaking. I have had many issues with my Quest. This car was not built with proper parts. I can't drive it but I have to keep it for my son is in a wheelchair and is severly disabled.

Nissan Quest 2004 service engine soon light on and problems with steering. The service engine soon light had come on 3 times, creaking was felt in the steering wheel and or the front end, sounds were heard coming from the engine compartment, computer tire monitor indicated a flat tire and or low tire pressure during cold weather, the vehicle would run for five minutes then go up to 4 degrees higher (over inflated), when the weather was warm, the setting would then be above 40 psi which was dangerous to drive if not adjusted (incorrect results on the display), srs light had come on after recall campaign #04v103000 was performed, driver's side power window was intermittent, sliding doors made loud bump noise when opened all the way, especially on inclines, heat outlets located on the floor behind the first row seat can't be controlled by the passenger rear controls, the dome lights were not working, the door rattled, the drivers side front window would not move, the window switch has an open circuit, the vehicle was jerking upon acceleration at 30 mph, rear heater was blowing cold air, there was a heavy grinding noise when the vehicle was first started after sitting for more than one hour along with the power steering, transmission fluid leaked a reddish/purple fluid on the garage floor, the interior lights were inoperative and there was an evaporation leak.