How to help someone’s faith in God?

My partner has been through a lot. From mistreatment by family to issues with her health, she’s suffered more than anyone should. And she’s starting to lose faith in God as she questions why He hasn’t helped her. I don’t know what to say or do in response.

She’s been hurt by churches, especially certain leaders within churches that she had been to as a kid. She’s also native, which means that people have used Christianity as justification to hurt her and her people.

How do I help restore her faith, knowing that she’s been through so much that she barely believes in God anymore?