Red flag
She's under 18 and sent it herself?
Green flag
It's still illegal.
Delete it. Never share it.
Is it illegal to have a nude from someone under 18 if she sent it herself?
Why?
Yes. In the US and most countries, any sexual image of someone under 18 is illegal to have or share, even if she took it and sent it herself, and even if you're a teenager too. Don't save it, don't forward it, don't show it to anyone. Delete it. Sharing it can lead to serious charges and hurts her for years.
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