The actor stars as a woman dealing with her daughter's sudden fame in the new film that was actually written by Bateman. He wasn't able to be there for much of the filming because of other work commitments, and she noted that it was a blessing in disguise.
"I think that (not having him there) was very helpful for me and to be honest that was precisely the moment where it ended up being really good, because otherwise I would've felt a little inhibited," Ridley told MovieWeb.
"He's come to set to watch me in other things but because of the nature of this role in particular, and it's all so personal anyway, particularly because he was able to watch the dailies and actually give feedback as someone who wasn't there.
"Often as well, you go into (making) a movie you think it looks great and it feels great, but you think 'Is it translating?' For him to be watching the rushes every day and saying 'yes' was another layer of comfort that we were capturing what we had hoped we were."
Bateman recently revealed the Star Wars actor had the inspiration for the story while working on another film, and he agreed to write it as she hastily set up a meeting with producers.
"So I picked her up from the airport and in her jet lag state she said 'What do you think?, I think this could be a really cool idea for a movie'. And we talked about making something together before," he said.
"I've been writing for a few years and she's been so supportive of my writing. And she said 'Do you think you wanna write it?' and I said 'Yeah, that'll be so fun, leave it with me'.
"About two days later she said 'I've set us up a pitch with these producers, and a few days later they called back and said they were really interested. So I was given the task to effectively write this script yesterday."
The script was needed ASAP so he set his alarm for 4am each day and "took a jug of coffee to this little barn" to write for four or five hours, Bateman added.
"Daisy would come down in the morning and read what I'd written, I'd pace up and down nervously chain smoking."