My understanding is that reconciliation is the process by which bills with different language from each chamber are conformed for final passage -- the conference committee. There are some specifics laid out, as OldDeckHand notes, in budget bills, Congressional Budget Act of 1974, due to the necessity of funding the functions of government, can't have it grind to a standstill because the House and Senate can't agree on this or that wording. Because this legislation they are foisting is not budget/appropriations, it has to go through normal legislative process ... unless they cheat, as it seems the Dems are attempting to do here.
I guess reconciliation means 2 diffecrt things. Anyway, I think Pelousy’s threat is empty, or maybe this article pre-dates her recent capitulation.