They were Aurors, you know, and very well respected within the wizarding community,' Mrs Longbottom went on. 'Highly gifted, the pair of them. I — yes, Alice dear, what is it?' (OotP Chapter 23)


You're right! Good eye. From the dialogue in GoF, it does seem that JKR changed her mind. Although it's not specifically stated that Alice isn't an Auror, the fact that Dumbledore only says that Frank is clearly suggests that she is not.