I'm sure Fifi appreciates you rescuing her. She will be purring once you get her cleaned up. I have a Pfaff 130 and would not give it up. His name is Zeus; he received some good loving at Zeus Machines. Great machines. Oh! Do not ever do bobbin work with her, which is when you might put a furry or unusual thread in the bobbin and sew from the back. Ask me how I know.
Zeus Machines is EXCELLENT! They have a web site.