My daughter can't find her iPhone

This is a public user to user only forum. You have posted your phone number on a public forum visited by thousands of people from all over the world, which is most unwise. I have asked the forum hosts to remove your phone number. No one is going to call you. At least no one you'd like to call you.

Apple doesn't get involved in lost or stolen phones. If your daughters phone had Find My enabled on it see this link for guidance --> If your iPhone, iPad, or iPod touch is lost or stolen - Apple Support

If Find My was not enabled, you can't track a lost phone and the only way to find it is the old fashioned, look for it.