➥Prologue
In Vampire The Masquerade: Bloodlines - Rosa, the player encountered a character named Rosa, who had the ability to see into the future. Several of her responses foreshadowed events to come, and one of her responses would be repeated later. The following was her final advice, a warning to Jadusable about the cartridge: "Whether or not you win the game... matters not. It's if you bought it."
➥Moon Children Arc
The About page on youshouldnthavedonethat.net listed several people in a special thanks area. One of them was Rosa. When Ifrit received emails shortly before the end of the First Cycle, he revealed that Rosa is his sister. After the New Wave Bossa Nova was played during the Second Cycle, she responded in Ifrit's place, and was able to confirm that Ifrit was missing and pass Ryukaki the login information to The Truth. Disregarding advice from others, one user played the Song of Healing, which most likely caused her to disappear like her brother did the night before. After the Song of Time was played, the tags on the first video changed to "YOU DIDN'T SAVE HER."
An account belonging to Rosa appeared in the Tenor group on Within Hubris. Information on her account began changing, eventually allowing users to access Wayward Horizon by hinting toward its password.
➥Awakening Arc
Rosa's phrase, "I don't know what I'm saying, forget what I say" can be heard repeatedly at the beginning of several videos. The significance of this is not known at this time.
In The Truth.wmv, while the spirits are speaking to Sarah, one of their dialogues is suddenly interrupted by the phrase "I'm sorry. Sometimes I don't know what I'm saying." The emphasis on the latter phrase, plus the appearance of Rosa's name in the video's tags, has been taken to imply that the speaker is Rosa's spirit.
Rosa was rescued from the Moon Children in The Prisoner.wmv, wherein she gives Sarah the Pendant of Memories and the Light Arrows. Shortly after, the tags for the Vampires Masquerade video changed to "YOU SAVED HER". In The Happy Mask Salesman.wmv, She assumed a guide role for Sarah and points her in the direction of Snowhead and Great Bay. Rosa provided information about what she and the others within the cartridge had expected, a personal playground. Later in Clock Town, she protected Sarah from the entity that sent Wart.
During the Goht fight in The Dying World.wmv, Rosa assisted Sarah twice, using most of her strength to help her. She was revealed to be in a void space with Ryan. Once again in the void in The Predecessor.wmv, Rosa explained that she was unable to obtain an item for Sarah to defeat Gyorg because someone else was using it. She was unable to sense Sarah after she was pulled into the white void.
In the initial iteration of Eternity-project.com, a subpage dealing with Rosa was discovered revealing her origin was tagged as "KDNP09". Though her apparent kidnapping by the Eternity Project is thus directly attributable to the year 2009, her actual date of ascension is still somewhat unclear, as her death being prior to the player discovery of YSHDT raises some questions on the nature of her infamous disappearance.
Rosa reappeared in The Final Hours.wmv in the grey void with a previously unseen group of ascended souls debating their next course of action. She opposed letting the moon fall.
She and the other souls were reset to erase the trauma sustained after what occurred. According to The Father, she has no memory of these events.
➥Personality
Contrary to the in-game avatar that preceded her, Rosa appeared to be frantic and unable to remain calm during the emails exchanged with her. She also seemed to care about her brother, and was implied to dislike Alex
