Helpppp!!!

So there is this movie I watched years ago on TV. I only saw a little bit. But it was about this family back a loong time ago. There was a father, mother, and they had one little girl. Well, the mother got sick with consumption and the father decided to build her a glass house so they could still be around her. In one scene they gave her her lunch through this door that opened in the glass house. It was like a round glass house I think. But that is all I remember. Can anyone help me figure out what the title might be??