I'm sympathetic to the notion that Brazilian politicians, many of whom are under investigation in the corruption scandal, are using her as a scapegoat, but I don't think this qualifies as a "coup" (and you put quotes around it so you may be using it as a metaphor or something) in that I do not think her removal from office has been illegal.
I also happen to think she is guilty of a minor crime in her budget irregularities that merits removal from office, but on that point I can see how others would disagree. It's a "ticky tacky" infraction, and that had been done previously with impunity.
Do you think she is guilty of any crime? I'm interested in hearing from people who think she is innocent of wrongdoing. My own position is that though she may be a political scapegoat and a victim of political opportunism that she is actually being removed from office with legitimate reason.