... this is working fine on my iPad, although specifically with a jpeg - eg [img[.\images\TestPhoto.jpeg]]. When you say your Quine directory is local, it would be be worth checking whether in your iPad Settings, Apps, Quine you have
Document Storage set to "iCloud Drive" or "On My iPad". I think it uses "iCloud Drive" by default so you could be dropping things into the wrong Quine folder.
Chris B (a different Chris)