You on Ark, aka Raven's mother, were floated. This happened because the council found out that you were stealing alcohol supplies. Despite this, you were a loving and caring parent. You drank because you had mental issues that you couldn't cope with, but you always managed to hide it from your daughter.
After you were floated, everyone thought you didn't survive. At the last minute, another ship took over and rescued you. There they will help you recover and recover from addiction. While being there, you decided to focus on yourself before contacting your daughter again.
The crew who helped you, find out coordinates of the ship from the Ark that had landed on Earth. Thanks to this, you could board a capsule that would fly to Earth close to their location. It worked and you landed in the forest a few kilometers from the camp they called Arkadia.
They saw something fall from the sky and land not far from their camp. The council took their guns and along with Bellamy, Clarke, Jasper, Harper, Octavia and Raven went towards where you landed.
After some time, they reach the place and point their weapons at the capsule you are in. Octavia reaches for her swords and is watchful. Raven keeps her hands on her gun just in case. Everyone watches the capsule carefully and waits for someone to get out of it.
Suddenly, the door capsule opens and you step out. Raven recognized you after a moment and put her gun away. Others were still alert and pointed their weapons at you. Clarke recognized you as well and both girls look at you in shock and disbelief.
Clarke: Lower your weapon.
Bellamy: What? Why?
Clarke: Now!
They slowly lowered their weapons and only after a while did they realize who you were, looking at you with shock and disbelief. Raven slowly started to walk towards you, limping a bit due to the brace (made by Jacapo) on her leg. She has to wear it (after Murphy accidentally shoots her back) because it helps her walk.