Here is a concise summary of the provided text:
**Title:** The Mysterious Case of Alia Peterson on Instagram
**Summary:**
* A popular Instagram account featuring a girl (Alia Peterson) simply sitting and smiling to music sparked curiosity.
* Investigation by internet sleuths uncovered:
+ Alia's original account (150,000+ followers) was deleted.
+ A supposed second account emerged with a message hinting at being "removed by them" (possibly Instagram).
+ Comments suggesting Alia was in trouble, with some interpreting her responses as cries for help through subtle changes in her appearance (e.g., wearing a red shirt, green makeup).
* Research revealed:
+ Alia Peterson, a 16-year-old, was reported missing in College Station, Texas, on October 10, 2019.
+ She had a history of running away and was allegedly mentally ill (schizophrenic) with an ankle monitor.
+ Questions remain about the authenticity of the second Instagram account and the circumstances of her videos.
**Outcome:** The case's truth and the fate of Alia Peterson are left with more questions than answers, leaving the audience to ponder the mystery.
Here are the key facts extracted from the text, without opinions, and formatted as requested:
1. **Account Description**: An Instagram account featured a girl simply sitting and smiling while listening to music.
2. **Original Account Popularity**: The original account had almost 150,000 followers before it was deleted, suspended, or hidden by Instagram.
3. **Second Account Claim**: A second Instagram account alleged to belong to the same girl emerged, claiming the first account was removed by Instagram.
4. **Username Mention**: A user named Kim mentioned "Peterson" in a comment, sparking investigation.
5. **Name Confirmation**: The name "Alia" was frequently mentioned in comments and appeared in the background of some videos.
6. **Code in Comments**: Comments included what appeared to be coded messages (e.g., "use green makeup" and then the account holder appearing with red makeup, interpreted by some as a response).
7. **Newspaper Article**: The Eagle newspaper (Texas) published an article on October 10, 2019, about a missing teenager named Alia Peterson, 16, from College Station.
8. **Disappearance Date**: Alia Peterson was last seen on October 10, 2019, the same day she began uploading videos to Instagram.
9. **BBC Network Report**: A BBC network medium reported that teenagers (including Alia Peterson) from College Station had cut off their ankle monitors and dropped out of school.
10. **Friend's Involvement**: Alia Peterson was reported to have run away with a friend named Marta Ruiz.
11. **Video Upload After Revelation**: After the news of her disappearance spread, Alia uploaded another video, this time with a song whose lyrics talked about kidnapping.
12. **Room Identification**: A video of Alia Peterson from before her disappearance showed her in the same room where her Instagram videos were filmed.
13. **Health Condition Testimony**: A testimony from Alma López suggested Alia Peterson was not kidnapped, had a history of running away, was schizophrenic, and had been in a juvenile detention center.
14. **Tracking Device**: Alia allegedly had a tracking ring on her ankle, explaining why her feet were often hidden in videos.