[Hillarys comments and policies are contradicting your statement. So were her husbands and Obama policies.]
Let’s say earlier US withdrawal from missile defence ban made INF treaty absolete.
Also Russians claim to have intelligence that US were planning to use ABM infrastructure as cover for INF.
Considering the technology involved it is at least very likely but it is not really the case.
The single actual reason for INF withdrawal is the fact that China is not a participant. It makes no sense for other players to limit themselves with China unrestrained.
And by the way you are selling Clintons short as dovish. Although not in a class of Hitler they left quite a scar across multiple nations. Russia included.