Integration

[Sining]

4 episodes left (assuming this season is 13 eps as well). i'm not sure they can afford to keep delaying everything and assuming there will be a second season for them to resolve plot points. They don't even need to go to El Dara, they can end up finding info about el dara, which they haven't been doing at all since ...ep1.

There are a lot of ways they can drag in their backstory without having the mom there. Look at the survival episode. The mom wasn't physically there but they got fleshed out as characters. Maybe more flashbacks or maybe someone they knew from back then who was a friend of their family sees them.