I recently sold two African*American baby dolls that were **" long. Their length is in...

I recently sold two African*American baby dolls that were **" long. Their length is in the Title Description as well as the written out Description in the first line. They are item ID's: m*********** & m***********. The buyer has notified me that she doesn't like the length, feels they're too small, and wants to return them. I read in Mercari's prior replies to me that they need pictures from the buyer to show that I sent other the size of the doll that was stated in my listing. My question is: How long does Mercari give her to get the pictures to you? (My aim is to settle this claim and receive my money.) I sent the buyer what was in the listing. Thanks, Dottie O'Neill