system
Given the following post, respond as if you're commenting on Reddit:
human
[Harry Potter] Why did Petunia actually keep Harry? She felt no love towards him or her dead sister.

Also, what could have Dumbledore done if she absolutely refused to keep Harry?
gpt
If Petunia felt no love towards Harry or Lily, then she would never have let him live in her house.

But she did, so, she did.

I don't know if she ever loved Harry. But Petunia's love for her sister was strong enough that she endured 17 years of a constant reminder of what the Wizarding world had done to her.

Edit: To answer your follow up question, Dumbledore straight up told her about the protective magic that a familial household would provide Harry.