diff --git a/frontend/lib/widgets/admin/common/admin_child_detail_modal.dart b/frontend/lib/widgets/admin/common/admin_child_detail_modal.dart
index e160b25..eae7d4d 100644
--- a/frontend/lib/widgets/admin/common/admin_child_detail_modal.dart
+++ b/frontend/lib/widgets/admin/common/admin_child_detail_modal.dart
@@ -1277,18 +1277,16 @@ class _AdminChildDetailModalState extends State<AdminChildDetailModal> {
       return;
     }
 
-    // Édition orphelin (#157) : rattache immédiatement au foyer.
+    // Édition orphelin (#157/#158) : un seul attach — le back propage au foyer.
     final enfantId = widget.enfant?.id;
     if (enfantId == null || enfantId.isEmpty) return;
 
     setState(() => _saving = true);
     try {
-      for (final parentId in selected.parentUserIds) {
-        await UserService.attachEnfantToParent(
-          parentUserId: parentId,
-          enfantId: enfantId,
-        );
-      }
+      await UserService.attachEnfantToParent(
+        parentUserId: selected.pivotParentUserId,
+        enfantId: enfantId,
+      );
       final refreshed = await UserService.getEnfant(enfantId);
       if (!mounted) return;
       setState(() {
diff --git a/frontend/lib/widgets/admin/common/admin_parent_edit_modal.dart b/frontend/lib/widgets/admin/common/admin_parent_edit_modal.dart
index 6365159..101b6a5 100644
--- a/frontend/lib/widgets/admin/common/admin_parent_edit_modal.dart
+++ b/frontend/lib/widgets/admin/common/admin_parent_edit_modal.dart
@@ -283,7 +283,7 @@ class _AdminParentEditModalState extends State<AdminParentEditModal> {
       builder: (ctx) => AlertDialog(
         title: const Text('Détacher l\'enfant'),
         content: Text(
-          'Retirer ${child.fullName} de la fiche de ce parent ?',
+          'Retirer ${child.fullName} du foyer (tous les responsables) ?',
         ),
         actions: [
           TextButton(
@@ -308,8 +308,9 @@ class _AdminParentEditModalState extends State<AdminParentEditModal> {
       if (!mounted) return;
       await _reloadChildren();
       if (!mounted) return;
+      widget.onSaved?.call();
       ScaffoldMessenger.of(context).showSnackBar(
-        const SnackBar(content: Text('Enfant détaché')),
+        const SnackBar(content: Text('Enfant détaché du foyer')),
       );
     } catch (e) {
       if (!mounted) return;
@@ -336,8 +337,9 @@ class _AdminParentEditModalState extends State<AdminParentEditModal> {
       if (!mounted) return;
       await _reloadChildren();
       if (!mounted) return;
+      widget.onSaved?.call();
       ScaffoldMessenger.of(context).showSnackBar(
-        const SnackBar(content: Text('Enfant rattaché')),
+        const SnackBar(content: Text('Enfant rattaché au foyer')),
       );
     } catch (e) {
       if (!mounted) return;