From where you rescued Lae'zel and from the little ravine where she was (going east takes you back to the ruins) go west and north at the broken wheel cart to reach a fork in the path. Go northeast all the way until you unlock the Silvanus' Grove waypoint.
Save your game here and go northwest now down the ravine and a scene will play out. Several NPCs are being chased and attacked by a group of Goblins and a Worg. It looks like an intimidating fight because there are many enemies, but the NPCs will help out, including the ones on top of the gate. Focus on the Worg and the goblin boss (Za'krug) since the NPCs will easily kill the weaker ones.
After the fight, make sure to loot the corpses, especially the boss Za'krug since you can get Gloves of Power off his body. If you finish the fight without anyone dying, Lae'zel will get an Inspiration Point.
Enter the settlement behind the gate: Emerald Grove. Approach the Tiefling Zevlor to the north for a scene. If everyone survived the goblin attack (namely Aradin), he will argue with Zevlor. You get a few checks, which increase if you pass an Insight check:
Both Shadowheart and Gale approve either Intimidation or Persuasion. Lae'zel approves punching Aradin or Zevlor. If you punched Zevlor, you get the Find the Nightsong quest from Aradin if you ask about the druid Halsin.
After the scene, talk to Zevlor alone (you do this right away if Aradin died). He tells you about the situation in the grove, asking you for help in talking to the acting leader: Kagha. Your goal is to ask for more time before you are kicked out. Agreeing to seeing her gets approval from Gale while Astarion disapproves. Shadowheart will approve a refusal.
Whatever you decide, you gain some new quests:
Get Help from Healer Nettie
Save the Refugees
Before you proceed, to the south is a ladder leading to the top of the gate. Climb up, then go up the southeastern hill to find a Tiefling (Nadira) with an attacking Bugbear. Kill it before she dies and you can speak after the rescue.
During the talk, you can use a Deception check to get a Soul Coin from her.
If you didn't save Nadira, you can get the Soul Coin from her corpse.
Return to where we talked to Zevlor and head north to The Hollow. The first NPC on your right, Arron, is probably the first merchant you've met. There are several here in the grove; use them to sell all your unnecessary items. The path splits going north and west. Go north to find three more Tieflings in a conversation.
Telling them to leave while they can will increase Shadowheart's approval but make the Tieflings leave. You can use a Persuasion check to convince them to stay.
Should you fail the Persuasion check, select the option about money to get the Tieflings to stay. If you are a Dragonborn, you get a special check that automatically works which Gale approves of. However, Rolan isn't supportive of the decision.
Go north of the Tieflings' initial position to see a group of NPCs training. You will find Wyll, who fought against the Goblins. Talk to him and he will join the party (or go to camp if the party's full). Speaking as a Dragonborn gives you a unique speech option. Lae'zel disapproves of bringing Wyll on board, while Gale approves.
After the talk with them, you can talk to Rolan who walks down a level to the northwest. Ask why he's eager to reach Baldur's Gate to learn about the great wizard Lorroakan. If you select the option "Good idea: powerful acquaintances never hurt" will increase Gale and Wyll's approval. There's a Baldurian check but it doesn't do much.
From here open your map and look north/northwest to find your quest marker. You will find Zorru, who Lae'zel is looking for. Put her in your party and speak to him to get information about the healer. He may move near a wooden house in the same area if you can't find him.
Tell Zorru to listen to Lae'zel both times. You can give Zorru a menacing glare if you are a Dragonborn for both actions. Lae'zel approves of both actions but Shadowheart doesn't. You learn of a githyanki patrol to the northwest. Head back to the Emerald Grove Environs Waypoint and make your way northwest. You will encounter a group with one man on the ground.
You will meet Bryanna and Andrick who are looking for survivors, though they were attacked by an owlbear. Saving Edowin is impossible despite your choices. Bryanna and Andrick will be hostile if:
You mention you are not a True Soul
You mention you are a survivor of the Nautiloid (ship)
Talk about fighting the owlbear to have the two get revenge, which Lae'zel approves of.
You can inspect Edowin's corpse for a scene. You get the Mind Flayer Parasite Specimen if you accept the tadpole. Otherwise, you have two checks:
Go past Edowin and you will see the path split to the left and right. Go right across the river, then left to reach the Owlbear Nest. Enter the cave and head down the path, eventually running into the Owlbear. You have three checks you can use: