She was very committed to the TPP during that time. She was on record 45 times supporting it as SoS. So let's say that she was supporting TPP on behalf of the Obama administration because that was her job. But if she didn't know what was in it at the time, that's on par with not knowing what she was talking about... THAT'S the dog that won't hunt, in my opinion.
The larger point here is the sense that she will move to the left on this issue during the primaries and then more than likely once she becomes the nominee will move back to the middle and say, "Hey we've got to be careful around these agreements, but here's a long list of benefits..."