Find survivors of the shipwreck
Your task is to find the castaways who are still alive. Leave the woman alone for now and search the others' pockets, you'll find some valuables. Tear out a club from the nearby branch. Search the nearby beach to find a small healing potion, some shells (double click it in the inventory screen and you'll have a chance of getting a valuable pearl) and a couple of alcohol bottles. Going too far into the water will end up quite badly, so keep on beach.
Head to the right edge of the beach where another corpse awaits us. Search it and you will find a hunting knife. Turn left and you should see a rock with a big shield. Approach it and you will find another castaway and beside him - a hungry sea vulture. You shouldn't have any problems with beating him with a couple hits.
In the middle of the road between the now dead bird and the drowned body turn around and go into the jungle, passing the rocks on the left. Go straight until you find a red mushroom and then turn left. Just a couple more steps and you'll find a small shield, rusty sword and a small healing potion. Being armed like that, return to the woman on the beach. Begin a conversation and declare that you're ready to go.
Take Sara to safety
Take out the weapon and follow Sara down the path. After a while you will come across a young stingrat and a little further - a hungry wolf. Take their meat and go up. Collecting every item and plant you come across is a good habit. In the rock on the left you will find a cave and another wolf beside the entrance. Exploring the cave can wait for later. The Gnomes inside are quite a pain in this phase of the game (it can be done, however there aren't many interesting items inside). A little further you will find another stingrat and eventually you'll come across a house in which Sara decides to stay.
Investigate the abandoned house
You'll finish this quest by simply going through the door of the house. If you need to replenish your health, there's a water barrel at the back. You can return to your friend and report that there's no one inside. You will receive another "ambitious" quest.
Find the key in the abandoned house
The key lies nearby the bed in the second room. After finding it, talk to Sara again to receive another task.
Loot the chest in the abandoned house
In the first room, by the wall, you'll find a chest. Take everything from inside. You will obtain frying pan among other things. Inform the woman about everything.
Take some fried meat to Sara
On the right you will find some raw meat. Having the pan in the inventory, approach the fire and cook whatever you can. Afterwards offer some to Sara.