House Speaker Nancy Pelosi responded to questions and concerns about the construct of a heavily partisan impeachment process and her refusal to send the articles of impeachment to the Senate.
Highlighting the tenuous nature of the position now held by her party, a barely coherent Speaker Pelosi attempts to explain. As reporters ask questions, Pelosi becomes frustrated and tells the compliant media no more questions on impeachment will be entertained.
A day after impeaching the President, the Speaker of the House refuses to answer questions.   [Video prompted to presser portion at 11:50 – watch until 14:00]

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As noted by Jay Sekulow, the House portion of the impeachment effort is finished.  The constitution does not outline rules, managers, and delivery methods. Once the House votes to impeach, they are finished.  The Senate has full control now.
The Senate can begin their trial phase at any time and call for presentation of articles by the House.  If no-one shows up, case dismissed.  Pelosi/House has no role in next phase.