Thrilling forum

La più bella coppia del mondo (1968) credited, as Ingrid.

...e lo chiamarono Spirito Santo (1971) credited as Margaret Rose, as Consuelo Thanks to Carlos for providing the images

I due pezzi da 90 (1971) credited, as Bonaria upgraded: carlos

Il ritorno del gladiatore più forte del mondo (1971) credited, as Caio Appio's sister

Roma Bene (1971) credited as Rose Margaret Keil, as Suzy

Decameroticus (1972) as Nardella. Another one where she should be credited, but wasn't in the copy I watched, but she is credited as Margaret Rose on the poster.
credit screen:

Il Decamerone proibito (1972) as Monna Beatrice. All acting credits are missing from the currently circulating German print, but she is credited as "M. Rose Keil" on the poster. Screenshots provided by Johan

Io monaca... per tre carogne e sette peccatrici (1972) credited, as Gail.

Metti lo diavolo tuo ne lo mio inferno (1973) credited as "Margareth Rose Keil", as Amalasunta.

Diario segreto da un carcere femminile (1973) as Swedish prisoner. I think it's possible she has another scene that was cut from my copy.