Pelosi is not going to have a breeze like she thinks. She can only lose 4 votes in the house. The senate is worse if tied.
We will know the answer to this when the fraudulent votes are objected to.
We will see how many, and who specifically vote to toss the electoral votes objected to.
Based on history, and gut feeling, I have a strong suspicion very few will vote to toss in the House, and even fewer in the Senate.
That will give us a preview of what's to come in terms of pushing back.