Take Lae'zel to talk to the inquisitor W'wargaz, I believe his name is.
to do that, you have to go through the portal/door in the room with the kith'rak, the captain you mentioned deceiving. to go through the portal/door, you'll need the red gem thing to insert. the captain lady has it in her possession. just mentioning in case you missed it in the cut scene.
