Though 'overprotective' seems caring, it's usually seen as excessive and suffocating. Her friend thought she was being helpful, but her overprotective nature eventually drove people away.
Pro Tip 2/3
Limits Freedom
'Overprotective' implies actions that restrict someone's independence or experiences unnecessarily. The overprotective teacher wouldn't let students attempt the experiment themselves.
Pro Tip 3/3
Emotional Impact
Being overprotective can cause frustration or rebellion in the person being protected. Feeling stifled by his overprotective parents, Mike moved out as soon as he could.