The Question and Answer section for Island of the Blue Dolphins is a great resource to ask questions, find answers, and discuss the novel.
Karana plans to make the cave into another shelter.... a second home. She plans to use the cave if she is sick or injures herself again.
Santa Barbara is somewhat over twenty leagues away.
'From here to the coast of Santa Barbara - twenty leagues away?'
'No, only that which touches the island and where the otter live.'
Karana has now grown so close to animals like birds and otters that she vows never to kill another otter, cormorant, sea elephant, or wild dog.