Update:
The schrader valve on the accumulator has green stuff inside the cap, when we put the sniffer near it, it goes off a little bit but only when the cap is off. Same for the other side. When we touch the sniffer to the line or big hose, it goes off, like it is detecting refrigerant through the line. It went off passing the exhaust pipe too. Did not go off testing the front and rear vents inside the cabin, or at the compressor or condenser.
We very slightly tightened the schrader valve and will see if she is still leaking, if so, we'll replace both fittings with new ones. Comments or suggestions?