eBay was sending payments to my mothers PayPal and not to mine, now a 1099-K

So for some reason ebay had the paypal email going to my mothers email when it should have went to my own.  Now she has a 1099K from Paypal saying she made $46K last year.  My parents file their taxes together and are both on social security.   I was looking online and found that there is something called "nominee payments".  Is this what they have to do to file their taxes?  Really need help with this and don't want to have them lose their SS cause it shows she made over the allowed $17K