use Loader to destroy the victim button, which seems more realistic

main.qml

@@ -14,14 +14,17 @@ Window {
     ColumnLayout {
         anchors.fill: parent
 
-        Button {
-            id: button
+        Loader {
+            id: buttonLoader
             Layout.alignment: Qt.AlignHCenter
+            active: true
+            sourceComponent: Button {
                 text: "Greeting to crash"
                 onClicked: {
                     serviceObject.greeting();
                 }
             }
+        }
 
         Button {
             id: timerButton
@@ -36,7 +39,7 @@ Window {
         interval: 5000
         onTriggered: {
             console.log("triggered");
-            button.destroy();
+            buttonLoader.active = false;
         }
     }
 }