You should be able to do them they also have the semi translucent cubes spawn near them after quests are completed they are a little small so they can be a little hard to spot
- Flannery trigger in front of her feet but a small distance away
- Viola trigger on table next to her
- Mt Lady trigger to the side of her next to umbrella
- Olivia trigger in front of her feet
- Sonia feet scene trigger at back of map with piece of paper (can only be seen after doing Olivias quest and then buying her crystal from her and re approaching Sonia and accepting her new quest and clicking complete)
Hope this helps :)