Generally, it's a place where many traders have a psychological stop-loss set.
"If this goes below $1, I'm getting out!"
So, the shorts or MM's usually see that as a way to cover, using the volume triggered by all the stop losses at those psychological breaks.
She is getting support at different levels though, so it isn't going down as easily as that initial drop.
I am not a promoter or professional stock trader. I'm a regular guy who enjoys stock trading to make (or lose) a few dollars. I am only responsible for my own trading foibles, not yours...do your own DD.