All of that probably should've made Heather feel guilty for being so accusatory and hard-headed, and it did, a little. She just had a hard time trusting anything angelic to begin with, and now when they were acting the way they were, and when God was throwing a hissy fit of plagues and telling Sam he belonged to Lucifer...well. It only made things worse.
"Good, because I really don't feel like it all that much myself." A pause. "Is that really all you wanted? To ask about Castiel's Christmas?"