I believe that's what their staff is for. And you would have thought that a bill as important as O care would have been read by more than one Senator, but no. That wasn't even true. I do commend you though. You were the only person who actually came up with something to look at. I will be reviewing it for the next few days.
Sure, every Senator has a staff that assists in finding information, arguing pro and con points, laying out pathways to getting the legislation through and above all else, making sure that the legislation is writting to that it, juristically speaking, can hold up in court should it be signed into law and then be challenged in a lawsuit. Yes, that's part of what those staffs are for. But this does not mean that a Senator is not VERY active in crafting the legislation him-or-herself. And not only that, the Senator who sponsors a bill is the one who is supposed to have a very active hand in negotiations in case the HOR passes a similar but not identical version and the bill must go into a reconciliation round.
What a shame that you did not go to the links, because you will find that a lot of her legislation goes according to specific themes, themes that she trumpeted on the campaign trail and themes for which she often travelled to New York to get her voters' opinions on.
In other words, in her 8 years, Hillary Clinton did exactly what a Senator is supposed to do. It is juvenile and banal to try to remove the credit for her proven hand in over 3,300 pieces of legislation. And it doesn't matter how many of them passed the congress or not, or were signed by the President or not, especially in the case of divided government. A huge amount of work goes into it, no matter what.
And now, some more specifics for you:
Clinton was the very first Senator from New York to serve on the Armed Forces Committee - one of the most powerful and coveted committees in the US Senate. It was HER idea and HER penmanship practically entirely behind the "Heros at Home Act" of 2006/2007, which helps families to care for vets who have come home as a result of brain injuries in Iraq or Afghanistan. She also worked very closely with Lindsay Graham (R-Queen Bee - SC) on extending/improving TRICARE for National Guardsmen and Reservists. That was HER work, quite personally. My uncle is a large mover and shaker in New York, from Rochester, and he serves on a number of public boards about health issues. He is a Republican and has never in his life voted for a Democrat. Even my uncle had to grudgingly admit that Clinton is one of the best Senators ever from New York. I got a chuckle out of that one.
Hillary was one of the two main forces behind the DREAM act - she was fighting for it long before immigration reform was firmly in public view.
Hillary, with great support from Rudy Giuliani, a Republican long out of office (Mayor of NYC), fought hard for assistance for 911 rescue and recovery workers, the majority of whom became very ill due to the poisons in the dust from the destruction of the WTC.
What Hillary did NOT try to do was to try to rise in the Senate ranks into the leadership, as a freshman n00b senator. Instead, she worked like a dog. He participation in roll-call votes on the Senate from January 2001 to July 2004, again from April 2005 to April 2007, was almost 100%. Because of the campaign trail, at the end of the day, she missed 9.5% of roll call votes in total, most of them in late 2007 and through the primary season of 2008, not usual for a presidential candidate. Also, a number of votes are taken when a committee is still meeting and Hillary served on more committees combined than most any freshman Senator.
People can feel free to criticize the content of what Hillary worked on in the Senate, but what they cannot do with any credibility is to attack the amount of very measurable work that she did, not only in crafting legislation and doing the follow-through work, but also in participating in 5 dreadnaught committees, assignments that usually go to more seasoned members of the Senate.
Hillary's Senate record is one she can gladly run on in 2016.