I honestly loved this movie. I've watched it a few times over and shown it to friends and family who have all loved it too. It felt interesting having, what was in my opinion a great story, only told with 3 characters. I think the actors did a great job. The fact that Mother's suit was real with a real actor inside helped get really good reactions from the other actors and made for some really great moments. The subtle CGI where they needed it really worked out and made Mother feel real, and the CGI is great. I'd definitely recommend watching it.