That's not how time travel works (here).
Current day Nora's memories will change to reflect changes she makes to the timeline as she makes those changes, even if basic causality doesn't make a lick of sense, like how Savatar temporarily turned into a cabbage, when present day Barry was temporarily turned into a cabbage.
Although, the "more" you time travel the more you become resistant to time editing your memories, even if it does take a few years of constant time dickery to build up that immunity to causality, like the Legends finally have.
Current day Nora's memories will change to reflect changes she makes to the timeline as she makes those changes, even if basic causality doesn't make a lick of sense, like how Savatar temporarily turned into a cabbage, when present day Barry was temporarily turned into a cabbage.
Although, the "more" you time travel the more you become resistant to time editing your memories, even if it does take a few years of constant time dickery to build up that immunity to causality, like the Legends finally have.