However, that's the process. Moscow Mitch hasn't given any indication on how the trial is to proceed so I think until he does, Nancy really can't do anything.
Senate trial
Depiction of the impeachment trial of President Andrew Johnson in 1868, Chief Justice Salmon P. Chase presiding.
The proceedings unfold in the form of a trial, with each side having the right to call witnesses and perform cross-examinations. The House members, who are given the collective title of managers during the course of the trial, present the prosecution case, and the impeached official has the right to mount a defense with his or her own attorneys as well. Senators must also take an oath or affirmation that they will perform their duties honestly and with due diligence. After hearing the charges, the Senate usually deliberates in private. The Constitution requires a two-thirds supermajority to convict a person being impeached.[33] The Senate enters judgment on its decision, whether that be to convict or acquit, and a copy of the judgment is filed with the Secretary of State.[22] Upon conviction in the Senate, the official is automatically removed from office and may also be barred from holding future office. The trial is not an actual criminal proceeding and more closely resembles a civil service termination appeal in terms of the contemplated deprivation. Therefore, the removed official may still be liable to criminal prosecution under a subsequent criminal proceeding. The President may not grant a pardon in the impeachment case, but may in any resulting Federal criminal case https://en.wikipedia.org/wiki/Impeachment_in_the_United_States
What is absolutely amazing to me is that the lemmings all believe that if Trump is acquitted in the Senate it will mean that he wasn’t really impeached.