Rose is a side character from EverymanHYBRID who has yet to make an on camera appearance. She was Jessie's grandmother. The first mention of Rose occurred in the video "Rose." which described her funeral and her death, possibly from an attack by The Rake. This was further fleshed out in The Rose Article where it was revealed that her husband's name was William.
There is also a mention of a "William" and a "Rose" in the original Rake creepypasta further connecting them to both Linnie and The Rake. Whether Jessie's grandparents and the characters mentioned in the creepypasta are the same remains unknown.