OK... yes there is a slim possibility that the torque converter itself 'might' be damaged in some way that can cause a leak but the most likely suspect is going to be the seal in the pump.

in either case you are going to have to remove the torque converter bolts out of the flex plate and break the engine/transmission apart and pull the engine to get to this to replace the pump seal or even the pump itself, or worse case replace the torque converter. no other way around this procedure.

There is one other 'backyard trick' i learned from a mechanic buddy of mine that works at cocacola that can serve as a temporary fix, get a bottle of 'TransX' transmission treatment fluid made by CRC.
This stuff works wonders and can restore seals back to their original condition by causing them to swell and seal up any gaps left by wear that can cause leaks such as this.

Now i generally don't do these type of 'temp fixes' but its just a suggestion you might want to consider just to get the leak to stop temporarily till you can get to a point where you can actually go in and do the repair correctly.