Question

She said to her friend,"why you come tomorrow".(narration)

Answer 1

Corrected question:

She said to her friend, "Why will you come tomorrow?"

Answer after changing narration:

She asked her friend that why would he come the following day.

Additional information:

Direct speech is a sentence in which the actual words spoken by the speaker is written within inverted commas.

On the other hand, indirect speech is a sentence in which the words spoken are written without any inverted and commas and after making sufficient changes.