PHOTOSHOP Elements or PREMIERE Elements?
Photoshop Elements 13 and Premiere Elements 13 are standalone products, each coming with an Elements Organizer 13. When the two are on the same computer, they
share the same Elements Organizer 13.
When you refer to importing iPhoto photos into Premiere Elements 13, I am assuming that you really mean that you downloaded them to the Elements Organizer 13, not the Photoshop Elements 13 Mac Editor or the Premiere Elements Mac 13 Editor.
All that being said, please review the following Adobe TV video tutorial and let us know if has the information that you seek.
It is just Elements 13,
If all you are seeing is "Elements 13", please take another look. The program is designated Photoshop Elements 13 or Premiere Elements 13. Essentially the former is for photo editing and the latter is for video editing.
What you are aiming at is probably the Elements Organizer 13 which comes with these programs as I have described the situation in my post numbered 2. But, I cannot be sure that you are not trying to get photos from iPhotos by using Premiere Elements 13 Editor instead, with Add Media/"Photos from cameras or devices"/Adobe Premiere Elements - Photo Downloader".
And, if you do not have Premiere Elements in the first place, that possibility is out of consideration.
The answers will be in the details. And the troubleshooting rules in or out factors involved which are part of the problem description that you supply.