The pair locked horns during a task where housemates had to discuss various topics, each holding up a placard to say whether they were 'For' or 'Against' the subject.
It led to a little debate and a lot of bickering, with Ashley upset when Ann snapped at her during the discussions.
The morning after, in scenes to be shown in tonight's show, Ashley confronts Ann.
"I want to explain why I got so upset when you snapped at me," she says. "You're very of 'This is what I am and this is what I think and while I might not agree with it all.
"I respect your conviction and your ability to not be sensitive.
"I am so sensitive and, but at the same time, like when you brought up me and Jonny. I was like kind of, to me that's unkind.
"Why are you bringing me into it? I wasn't even involved."
Ann replied: "I think I will be very blunt, because you are so sensitive, you're a little bit of a bone picker in that you don't let things go.
"I just let things go and I think that now I've made the comment about you and Jonny that's it, it's gone. When people rub me up the wrong way, I might snap at the time but then I let it go."
The pair then hugged it out.
Ashley said: "I 'm happy we can wipe the slate."
Ann said: "I always say every day's a new day. I think you should have a New Year's resolution which says this year I will not be as sensitive.
Ashley agreed: "I'll be a little bit more Ann."
Celebrity Big Brother 2018 continues nightly on Channel 5.
Tonight's episode airs at 9PM.