What do you mean "our" choosing? There is no "our", "us", or "we". There is Pelosi, period. No matter what she does or doesn't do there will be those who circle the wagon and give "it was the only mature thing to do" no matter what.
What her actual intentions are? I expect she just might allow an investigation when enough people beg her because if there are adverse consequences she can pull "they begged me to do it" but if it works she can thank all the little people and go down in history as THE person who stood up to Trump. She can't help but win if she delays long enough she'll look pretty good and Trump gets a hearing. The problem is that this has nothing to do with "us" and her priorities have always been political. Hopefully, she'll do the right thing, but if she doesn't some will line up accusing others of being bothsiders or wanting to tear the Democrats down for Republicans. You betcha.