My mom was gifted this beautiful arrangement for my sweet late grandmother's service. She wants to eventually repot them into their own containers. They seem to be doing great so far and her Peace Lily even has some blooms (can't see in this picture). She's afraid that some might die if not repotted correctly. Any advice on when she should do that and how she would go about separating them? Should they be kept together? Are they fine for now? Thanks in advance!