Withholding the articles of impeachment from the Senate until a fair trial can be held is great strategy. Perhaps she can pull a Merrick Garland and claim it would be inappropriate to hold the trial in an election year. This would pose some interesting outcomes.
Donald Trump would be allowed to continue to make embarrassing mistakes and have the indefensible be defended by his party. All the negative press would most certainly result in lost Senate and House seats and the presidency. The Senate could end up with a Democrat as majority leader.