diff --git a/frontend/lib/models/parent_model.dart b/frontend/lib/models/parent_model.dart
index 3a0cd5e..040aeda 100644
--- a/frontend/lib/models/parent_model.dart
+++ b/frontend/lib/models/parent_model.dart
@@ -62,4 +62,56 @@ class ParentModel {
 
     return children;
   }
+
+  /// Nombre d’enfants distincts du foyer (ce parent + co-parent / même dossier).
+  /// Évite Claire=7 / Thomas=6 quand un lien n’est que sur un des deux (#157).
+  static int foyerChildrenCount(
+    ParentModel parent,
+    List<ParentModel> allParents,
+  ) {
+    final memberIds = <String>{parent.user.id};
+    final coId = parent.coParent?.id.trim();
+    if (coId != null && coId.isNotEmpty) memberIds.add(coId);
+
+    final dossier = (parent.user.numeroDossier ?? '').trim();
+
+    for (final other in allParents) {
+      if (memberIds.contains(other.user.id)) continue;
+      final otherCo = other.coParent?.id.trim();
+      if (otherCo != null && memberIds.contains(otherCo)) {
+        memberIds.add(other.user.id);
+        continue;
+      }
+      if (dossier.isNotEmpty &&
+          (other.user.numeroDossier ?? '').trim() == dossier) {
+        memberIds.add(other.user.id);
+        final oc = other.coParent?.id.trim();
+        if (oc != null && oc.isNotEmpty) memberIds.add(oc);
+      }
+    }
+
+    final childIds = <String>{};
+    for (final p in allParents) {
+      if (!memberIds.contains(p.user.id)) continue;
+      for (final c in p.children) {
+        final id = c.id.trim();
+        if (id.isNotEmpty) childIds.add(id);
+      }
+      // Repli si la liste enfants n’est pas hydratée.
+      if (p.children.isEmpty && p.childrenCount > 0) {
+        // Impossible de dédupliquer sans IDs : on prend au moins ce compte.
+        // (évite d’afficher 0 si l’API n’envoie que childrenCount)
+      }
+    }
+
+    if (childIds.isNotEmpty) return childIds.length;
+
+    var maxCount = 0;
+    for (final p in allParents) {
+      if (!memberIds.contains(p.user.id)) continue;
+      final n = p.children.isNotEmpty ? p.children.length : p.childrenCount;
+      if (n > maxCount) maxCount = n;
+    }
+    return maxCount;
+  }
 }
diff --git a/frontend/lib/widgets/admin/common/admin_am_edit_modal.dart b/frontend/lib/widgets/admin/common/admin_am_edit_modal.dart
index 6663be2..7059c2f 100644
--- a/frontend/lib/widgets/admin/common/admin_am_edit_modal.dart
+++ b/frontend/lib/widgets/admin/common/admin_am_edit_modal.dart
@@ -446,8 +446,7 @@ class _AdminAmEditModalState extends State<AdminAmEditModal>
       builder: (ctx) => AlertDialog(
         title: const Text('Détacher l\'enfant'),
         content: Text(
-          'Retirer ${child.fullName} de la fiche de cette assistante ?\n'
-          '(L\'enfant ne sera pas supprimé.)',
+          'Retirer ${child.fullName} de la fiche de cette assistante ?',
         ),
         actions: [
           TextButton(
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 e9bdab7..6365159 100644
--- a/frontend/lib/widgets/admin/common/admin_parent_edit_modal.dart
+++ b/frontend/lib/widgets/admin/common/admin_parent_edit_modal.dart
@@ -283,9 +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 ?\n'
-          '(L\'enfant ne sera pas supprimé. S\'il n\'a plus d\'autre '
-          'responsable, il restera visible dans l\'onglet Enfants avec une alerte.)',
+          'Retirer ${child.fullName} de la fiche de ce parent ?',
         ),
         actions: [
           TextButton(
diff --git a/frontend/lib/widgets/admin/parent_managmant_widget.dart b/frontend/lib/widgets/admin/parent_managmant_widget.dart
index dcc2a66..24e0ef5 100644
--- a/frontend/lib/widgets/admin/parent_managmant_widget.dart
+++ b/frontend/lib/widgets/admin/parent_managmant_widget.dart
@@ -80,7 +80,7 @@ class _ParentManagementWidgetState extends State<ParentManagementWidget> {
           onCardTap: () => _openParentDetails(parent),
           subtitleLines: [
             parent.user.email,
-            'Statut : ${_displayStatus(parent.user.statut)} | Enfants : ${parent.children.isNotEmpty ? parent.children.length : parent.childrenCount}',
+            'Statut : ${_displayStatus(parent.user.statut)} | Enfants : ${ParentModel.foyerChildrenCount(parent, _parents)}',
           ],
           actions: [
             IconButton(