The 35-year-old asked to leave shortly after Ben Jardine was evicted from the house, and bosses allowed the star to walk from the show.
She told Big Brother in the Diary Room that Ryan's warning was "not good enough", as she explained: "I don't feel very comfortable or happy at the moment because I slept separately last night because I felt uncomfortable because Ryan assaulted me and is still here".
Celebrity Big Brother continues tonight on Channel 5 at 10pm.
"She has now been reunited with her fiancé and family and thanks everyone for their support during her time in the show".
Meanwhile fans have called for the show to play the clip of Ryan and Roxanne play fighting to the remaining housemates.
In a clip filmed in the house on Friday, Thomas told Pallett: "I want you to know from the bottom of my heart I was showing my affection". Big Brother gave the former Coronation Street star a warning over the incident. Maybe it came across wrong and I really do apologise if it came across that way.
Sharing a picture which said "karma" followed by two arrows, she simply captioned it with: ''.
"I think she's a lovely girl, that's all I can say".
"I'm not questioning your integrity", Pallett replied.
She claimed in the Diary Room: "I'm just a little bit in shock".
'It won't because we're not gonna let that happen, ' Ryan said, 'let's just make this right'.
And Ryan's protective girlfriend, former TOWIE star Lucy Mecklenburgh, couldn't wait to break her silence over the reports on Instagram, after previously calling her a "lying b***h". "Any repetition and Big Brother may have no choice but to remove you from the house".