She's not taking heat for getting paid for speeches. She's taking heat for WHO she is getting paid by. Alot of the speaking fees she received are from people that many voters -- Democrats in particular -- feel are responsible for the economic recession in 2008 and have and subsequently acquired massive political influence after the Citizen's United case. In essence, there are alot of people who feel that the massive financial institutions are part of the problem rather than part of the solution, and their paying Hillary Clinton hundreds of thousands of dollars to give them encouraging peptalks looks ALOT like political corruption.
I think Hillary can say with a very straight face that nobody can point to anything she has ever done that can be proven to be reciprocity. The influence of money is so insidious in politics that even those under its influence are largely unaware it, subconsciously conflating the interests of their constituents with those of their donor/clients. That's why I would support Bernie; despite the goals upon which he and Hillary ostensibly agree, I believe Bernie would more energetically pursue those goals. It do trust Hillary - to be exactly who and what she is. And I give her credit for representing herself as such, to anyone who listens carefully. Her ethics, practices etc. are all geared to be responsive to the political environment du jour. She has managed to fend off Bernie so far, largely by series of tiny territorial grabs. The tactic is effective; first she sounds out Bernie's position on something by declaring "X will never work" and declaring "I have a better way". When she gets the feedback that a lot of people aren'/t sure it won't work, and she knows it is going to resonate, she changes to "But that IS my plan, and I have been trying to do X since blah blah, and if I am President, THEN I'll get it done". She is very effective at blurring the lines between her "position" and those of her opponent - wherever he seems popular.
If Hillary and teh Donald are nominated, I will not be surprised if she claims that doubling the budget of USBP and building a Wall (probably just a littler one - 'one that can actually be built') was in fact HER idea all along. But of course it would be a very friendly wall that would please everyone, especially Mexicans and Blacks, because it would
only keep out thugs and rapists.