Even though Angelica couldn't be seen in the pictures, she could see her reflection in the mirror and other reflective objects. Hence, she knew what she looked like. And that's precisely why Angelica was shocked to her core.
The girl in the video looked exactly like her.
"Jessica…?" Angelica muttered.
[Yes.]
"Why do you look like me?" she asked in a nervous tone.
[Because I am you.]
"...!"
[I was you before you died and became a ghost.]
"Wha…t? I don't understand. Why are you at Rudy's house, then? And… how are you alive if I am dead?"
[I am talking to you from 1999. I died in the year 2000, which is why I am still alive. And as for why I am at Rudy's house… it's my house too,] she responded with a shrug.
"What… do you mean? How could it be your house?"
[You must have seen the pictures in Rudy's phone of his one-year stay in 1989. Am I right?]
Angelica nodded a little without saying a word.