Hello, I created an account just to point out something I haven't seen noted: Her last instagram post, the alien one, has a bunch of Russian-language comments. It's notable because *none* of the other posts have any Russian comments at all, only this one, and there isn't any indication she's of Russian origin.
I don't speak Russian so passed the comments through Google translate, which is ******, but there are a few mentions of "Fear" and "mp4" (which is a video format), and seemingly concerned women. This comment caught my attention (again, ****** translation, would be great if a Russian speaker could review comments):
_______krolik_______ Like if from Jack Kramer here.
-When you google "Jack Kramer" and "Russian" the first thing that comes up is an old twitter account
https://twitter.com/kramer_jack that looks to be a Russian mail-order bride or prostitution site.
-When you click on the several Russian-language accounts that commented, many seem like puppet accounts w very few posts. But a few seem like people who travel often between Russian-speaking countries and the US. See:
Login • Instagram Login • Instagram @savage_07 There is also a @savage_07 twitter account that also advertises Russian women, last updated 2010
https://twitter.com/savage_07
-Why relevant? The Russian mafia is very active in California, both in human trafficking/prostitution and drugs, especially meth and cannabis ("maksim" has lots of photos of infrared cams which are used in illegal weed farms). That savage_07 account has a photo in Arcata, Humboldt County, a center of Russian mob activity where *many* women have gone missing. This is one pretty famous case:
Woman Missing Out of Arcata since January; Mother and Law Enforcement Seek Information – Redheaded Blackbelt
It seems Erika was having a rough time and perhaps getting into contact with sketchy characters, so who knows if this might be a sign towards that, or just a random and weird occurrence.
Pure speculation!