Despite her saying Abby was 25 when she went to jail, Abby was actually 17 at the time of her conviction according to the computer screen (1979 to 1996) Sara and her friend look at. This means she would have been even younger at the time of the crime, perhaps only 15 or 16. It is unlikely a juvenile offender would receive so severe a sentence,
You cannot put a SUV such as the one shown into drive from park without stepping on the brake pedal, and even if this had been bypassed, once it was in gear it would move forward, not be delayed for a couple of seconds as shown.
The search warrant the Sheriff hands to Abby is from the US District Court. That type of warrant would only be used by a federal agency. A county Sheriff would obtain a warrant from a state court. Additionally, the case number begins with 08, indicating a 2008 case, when it was being served in 2014.
Upon Sara arriving in "Twin Valley, Oregon", a distinctive Flapjacks Pancake Cabin sign is visible. That chain only operates in Tennessee and South Carolina, while the movie was filmed in Canada, indicating some B-roll footage was used.
Sara writes to Abby and on the envelope Sara's ZIP code for Silver Pines, Oregon is 73926. The ZIP code for the prison that was said to be 2 hours away in Twin Valley, Oregon is 6437892. The prison ZIP code has one digit too many, and all Oregon ZIP codes begin with a 97, so there would not be such a large disparity in the ZIP codes fro the same state. The 739 ZIP code prefix is in Oklahoma, while the 643 prefix is unassigned but if assigned would fall somewhere in Missouri. Conversely, the area code for the phone Sara lists is an Oregon area code.
The Billy Miner Ale House where Sara asks the waitress for directions is located in Maple Ridge, British Columbia in Canada, not Oregon.
Police serving an arrest warrant cover all doors so that the person to be arrested cannot run away as shown here. This would especially be true for a remote cabin with no rear fence.
Sara says Abby went to jail when she was 25. On the computer, it shows Abby was born 3/26/79 and her date of conviction was 9/15/1996, which would have made her 17 at the time of conviction. The screen also says Abby was sentenced to 25 years in prison. Sara then adds that Abby had her when she was 17 and gave her away when she was 6 months old. Abby was 17 circa 1996, and Sara had just turned 18 circa 2014, so Sara would have been born circa 1996. It's likely the actress should have said Abby went to jail when she was 17 and got a 25 year sentence but this was overlooked due to a low budget.
Sara says the earrings she found had been there for 10 years, but she was in prison for 18 years (1996-2014) until paroled.