Take photo with Fifi, Mimi and Dudu task not working?

https://preview.redd.it/qoruv2wsfczf1.jpg?width=1920&format=pjpg&auto=webp&s=8724b995628c52837ed04cd678a817f45b4b035c

She gets this little icon above her head, but talking to her is useless and when I try to take a picture either with just her, or all the kids in the frame, or each of them one by one it doesn't solve the task. Is this task not working for others or am I just dumb and haven't figured it out? Please help!