Black and White Movie about what seems a mute lady

Hi,

I'm trying to find a movie I think it is from the 1960s.  I think it was from the early 60s because there was a lady with these early 60's glasses and it was black and white.   I only saw a clip of it but it seems its like a very strange thriller.  I started viewing it  where a what seems a mute lady is getting driven to her sister's house, but she is narrating in the movie.   I think she is mute because her sister and then her sister's friend are trying to talk her but she doesn't respond to anything but creepily looks at them.    I just remember that then her sister's friend then tries to talk to the 'mute' lady by saying 'Hello There' but the mute lady of course doesn't respond.   The sister then tries to call some male nurses(I think they are nurses because they are dressed in white) from a mental institution.  The next strange thing that happens however, we see the sister actually being dragged out of the house by the male nurses while she is screaming at them to let her go.    I can't remember where I saw this movie.  I saw it back in the 90s.   Does this movie ring a bell to anyone?  Thanks.