Handling a processed dataframe in TabularDataBunch

I am currently preparing my dataframe by merging multiple other dataframes andmaking alterations to the columns. However, I realised that I need to prove a path variable in Tabular DataBunch. However, the path to the dataframe is different from the processed dataframe. How can I handle this?

The path variable is to save the model, not the dataframe itself (Since that is already in memory)

Oh, I didnt realise that. Thanks.