I thought she had revelance in the anime but beryl was never have said to been booted out the canon.
Patty never does anything important outside of being the central objective of Dante's mission in the first episode. Afterwards she was there to be there and doesn't affect any of what goes on in the show. As for Beryl, DMC2's novel isn't canon because of Dante's character during the time. According to the novel, Dante was as he always been, but in the game he suddenly turns quiet.