Ah, YES! Of course you are right: she is in Il figlio di Aquila Nera for circa two seconds!
And, yes, I also believe she is in Monsignor (playing a woman in church at the Sunday mass) but she is not very easy to see and I only have a VHS recording of this film so I can't make a picture.
I have been looking through many of the old pictures you have sent me and I found these pictures of Lina:
Prima ti suono e poi ti sparo (1975):
La cage aux folles II (1980):
And another role we must not forget is this:
Un esercito di 5 uomini (1969) - Spectator at Esteban's execution
(image from the Spencer-Hill Datenbank):