I believe McConnell, Grassley and even Trump himself want this to be strung out all the way to Election Day.
With each passing day -- even HOUR -- several things are happening:
1. Christine Buzzy Ford and her legal team look less credible. Heck -- her credibility was probably damaged irreparably as soon as she began negotiating through lawyers. Notice that Kavanaugh's statements, in comparison, have all been attributed to HIMSELF.
2. The Democrats on the committee who keep demanding "more time" look increasingly foolish. Feinstein in particular faces a scenario where her odds of losing her own re-election bid to that Mexican communist are growing by the day.
3. The mainstream media recognizes this and desperately wants the story to go away. Notice how little coverage this gets anymore outside national media outlets. My own regional news site that is pathologically anti-Trump hasn't had it on its news page in 4-5 days.
4. [PERHAPS THE MOST IMPORTANT ONE] The GOP prevents what would likely be the most damaging scenario (politically) for them: they vote to confirm Kavanaugh without any input from Buzzy Ford, and then she immediately "testifies" via national media coverage like a segment on "60 Minutes" or the "Today" show.
If it's true taht a buddy of his looked up her profile on Linkedin after he was nominated and before she sent the letter, and if it can be proven (the internet is forever), then it's over.
I'm predicting this is exactly what is going to happen. The GOP is NOT going to get any input from her before the vote. This is their strategy. It really doesn't matter what Grassley et al do so they might as well just confirm him and let us, the Trump voters, carry them through the elections. If they don't it will be a disaster for them.