After First Lady Michelle Obama's speech, Jill Dunham was feeling pretty good.

And the Michigan delegate was still feeling good when Bernie Sanders first took the stage.

"He stood up there and did the right thing. Even with the horrible election fraud, he's not whining about it," Dunham said.

But then the Hillary Clinton supporters in the Michigan delegation wouldn't accept or wave the Sanders signs. And even after he said, "Hillary Clinton must become the next president of the United States," nearly half of the state delegation walked out before he was done with his speech.

"I was so mad," Dunham said.

The Michigan primary was a close race, with Sanders winning by a little more than 1 percent. Some tensions have not cooled.

And after Monday night, it appears some new ones have emerged.

It remains to be seen how the Sanders supporters in the Michigan delegation will respond Thursday during Hillary's speech.

"I don't know. It's hard after tonight," Dunham said. "At least I have a few days to get over it."