Funeral director Newton previously appeared on Brad Womack's season of The Bachelor but made an unexpected arrival at current Bachelor Ben Flajnik's cocktail party on Monday night.
Newton had said in a voiceover while arriving in San Francisco: "He's everything I want in a guy. This is my only chance with Ben because he's going to be engaged in a couple of months. If I didn't do this I'd always think in my mind, 'What if?'"
Newton spoke with Flajnik at the cocktail party, saying that they had talked before he became The Bachelor and she had wanted to get to know him better. She told him to give her a rose if he wanted her to stick around, and if he didn't then she would leave.
However, the other women were less than impressed by her arrival, quizzing her on why she thought she had a connection with Flajnik and why she thought she had a chance.
Flajnik privately admitted that he could see himself with Newton but also had to consider all the other "wonderful women" on the show, eventually opting not to give Newton a rose.
Writing in his Entertainment Weekly blog, host Harrison said he knew the other women would not be happy but hadn't predicted the "nuclear meltdown" that occurred.
He added that Newton's arrival was a "pivotal" moment in the season that "changed" everything from that point onwards, explaining: "The ladies' reaction was so strong Ben couldn't help but realise just how serious these women were taking this. In return, Ben made the decision to send her home, which sent a definite message to the women that he's equally serious and sincere about this."
Leaving the rose ceremony, Newton said: "I was very confident I would get a rose tonight. I'm just really confused. There was a connection there with Ben and I and I think he just wasn't being man enough to accept that.
"Apparently he cracked under pressure. It's great that he's trying to be fair but this is about someone you will be with for the rest of your life and I don't think fair really comes into play right now. I was so not expecting to come home right now. I just feel so dumb."
Jaclyn Swartz and Erika Uhlig - who fainted during the rose ceremony - were also sent home. Brittney Schreiner had earlier chosen to leave voluntarily after realising the experience was not for her.
The Bachelor airs Mondays at 8/7c on ABC.
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