So I made a BIG OOPS and jumped my gfs car with the terminals in the opposite position... caught it after only 30 seconds or so when I noticed the a little smoke coming off the wires and ripped them off just as the wire coating started melting off.
I ended up replacing her car battery and not everything works except her AC fans won't blow. I don't know if the heater/AC compressor (?) is working or not but when I turn on the AC I can hear a change in engine sound as if its applying power to those components, but still zero fan movement.
I'm going to check the fuses with a multimeter but assuming those are working, what would likely be the next step? Her car does have a distinct smell of molten plastic on the inside.. I fear something else has melted under the dash.

pic related my cables