diff --git a/frontend/src/tools/dateien.jsx b/frontend/src/tools/dateien.jsx
index 82830fe..6c13df9 100644
--- a/frontend/src/tools/dateien.jsx
+++ b/frontend/src/tools/dateien.jsx
@@ -241,6 +241,16 @@ export default function Dateien({ toast, mobile }) {
         </div>
       )}
 
+      {/* Neuer Ordner Button (in Unterordnern) */}
+      {tab==='own' && currentFolderId && !newFolder && (
+        <button onClick={()=>setNewFolder(true)} style={{
+          display:'flex', alignItems:'center', gap:8, marginBottom:8,
+          background:'rgba(255,255,255,0.03)', border:'1px dashed rgba(255,255,255,0.15)',
+          borderRadius:8, padding:'8px 14px', cursor:'pointer',
+          color:'rgba(255,255,255,0.55)', fontFamily:'monospace', fontSize:11, width:'100%',
+        }}>📁 + Neuen Unterordner erstellen</button>
+      )}
+
       {/* Neuer Ordner Formular */}
       {newFolder && (
         <div style={{...S.card,marginBottom:10,display:'flex',gap:8,alignItems:'center'}}>
@@ -295,20 +305,21 @@ export default function Dateien({ toast, mobile }) {
             <div style={{color:'#fff',fontFamily:'monospace',fontSize:13,fontWeight:700}}>{folder.name}</div>
             <div style={{color:'rgba(255,255,255,0.45)',fontFamily:'monospace',fontSize:10,marginTop:2}}>
               {[
-                folder.owner ? `von ${folder.owner}` : null,
+                folder.owner && tab!=='sharedByMe' ? `von ${folder.owner}` : null,
                 folder.subCount>0 ? `${folder.subCount} Ordner` : null,
                 folder.fileCount>0 ? `${folder.fileCount} Datei${folder.fileCount!==1?'en':''}` : null,
                 folder.fileCount>0 && folder.totalSize>0 ? fmtSize(folder.totalSize) : null,
                 (folder.subCount===0 && folder.fileCount===0) ? 'leer' : null,
+                tab==='sharedByMe'&&folder.shared_with_names ? `geteilt mit: ${folder.shared_with_names}` : null,
               ].filter(Boolean).join(' · ')}
             </div>
           </div>
-          {!folder.owner && (
+          {(!folder.owner || tab==='sharedByMe') && (
             <div style={{display:'flex',gap:5}} onClick={e=>e.stopPropagation()}>
-              <button onClick={()=>setShareItem({item:folder,type:'folder'})} style={S.btn('#ffe66d',true)} title="Teilen">🤝</button>
-              <button onClick={()=>delFolder(folder)} style={S.btn('#ff6b9d',true)} title="Löschen">
+              <button onClick={()=>setShareItem({item:folder,type:'folder'})} style={S.btn('#ffe66d',true)} title="Teilen verwalten">🤝</button>
+              {tab==='own'&&<button onClick={()=>delFolder(folder)} style={S.btn('#ff6b9d',true)} title="Löschen">
                 <TrashIcon size={13} color="#ff6b9d"/>
-              </button>
+              </button>}
             </div>
           )}
           <ChevronIcon size={14} color="rgba(255,255,255,0.3)" dir="right"/>
@@ -325,19 +336,20 @@ export default function Dateien({ toast, mobile }) {
               overflow:'hidden',textOverflow:'ellipsis',whiteSpace:'nowrap'}}>{file.originalname}</div>
             <div style={{color:'rgba(255,255,255,0.45)',fontFamily:'monospace',fontSize:10,marginTop:2}}>
               {fmtSize(file.size)} · {fmtDate(file.created_at)}
-              {file.owner&&file.owner!==undefined&&tab==='shared'?` · von ${file.owner}`:''}
+              {tab==='shared'?` · von ${file.owner}`:''}
+              {tab==='sharedByMe'&&file.shared_with_names?` · mit: ${file.shared_with_names}${file.shared_at?' seit '+fmtDate(file.shared_at):''}` : ''}
             </div>
           </div>
           <div style={{display:'flex',gap:5,flexShrink:0}}>
             <button onClick={()=>download(file)} style={S.btn('#4ecdc4',true)} title="Download">
               <DownloadIcon size={13} color="#4ecdc4"/>
             </button>
-            {tab==='own'&&!inSharedFolder&&<>
-              <button onClick={()=>setShareItem({item:file,type:'file'})} style={S.btn('#ffe66d',true)} title="Teilen">🤝</button>
-              <button onClick={()=>delFile(file)} style={S.btn('#ff6b9d',true)} title="Löschen">
+            {(tab==='own'&&!inSharedFolder)||tab==='sharedByMe' ? <>
+              <button onClick={()=>setShareItem({item:file,type:'file'})} style={S.btn('#ffe66d',true)} title="Teilen verwalten">🤝</button>
+              {tab==='own'&&<button onClick={()=>delFile(file)} style={S.btn('#ff6b9d',true)} title="Löschen">
                 <TrashIcon size={13} color="#ff6b9d"/>
-              </button>
-            </>}
+              </button>}
+            </> : null}
           </div>
         </div>
       ))}