Thrilling forum

In Bava's famous horror Operazione Paura (1966) as Irene Hollender, protagonist of the beginning of the film.

Credited as Mirella Pompili in the opening credits of Riuscirà il nostro eroe a ritrovare il più grande diamante del mondo? (released 1971 but shot in 1967)
And also listed in the cast list at the end, which credits her with playing a hostess, i.e. a stewardess
This is, however, a false credit. The only stewardesses in the film are these two, neither of which are Mirella, and she does not appear anywhere else in the film either

She appears briefly in Io, Emmanuelle (1969) as Raffaello's shop customer

Don Chisciotte e Sancio Panza (1968) as Niece of Don Chisciotte

In Don Franco e Don Ciccio nell'anno della contestazione (1970) as Mrs. Rionello.
She's the protagonist of a little gag in wich she's a slightly snobbish lady called to kick-off the game...
...but she's overwhelmed by the players, faints and even "saved" by the captain of the carabinieri.

Credit only in Come rubare un quintale di diamanti in Russia (1967)

Credit only in Come rubare la corona d'Inghilterra (1967)

Storie Italiane (TV series, 1968) Ep: "Sette giorni di felicità"
Role uncertain, but credited in the cast list of Radiocorriere TV magazine, broadcasted in 1968.

I 2 pompieri (1968) credited. I didn't recognise her though I'm not too familiar with her, but there are only a small number of women in the film and there seem to be as many credited female roles as characters, so I think it is probably a credit only.

Uncredited in Pronto... c'è una certa Giuliana per te (1967) as Wife of Giuliana's friend
A small part in which she plays a jealous wife.