So, the question was:
- There is a page with a ListView, with a model from database contents
- Tapping on an item opens a new Dialog, where the database item could change
- popping the dialog leaves an old listview that needs refreshing

Now, I found your GitHub page on callbacks: https://gist.github.com/CODeRUS/5235...bfaf0bafbeb7cd

Could I push the dialog with a callback to a function that would update the listview? Or is that not what the callback is for? Something like:
pageStack.push(Qt.resolvedUrl("DialogPage.qml"), {callback: updateListViewAfterDialog })

Update: yes, this seems to work!