[Blue Highway]

Some questions the article doesn’t mention. Why was the babysitter of this woman’s family decide to hitchhike with this woman and move out of state to; Indianapolis? Why would the babysitter let her out of her sight since they were both leaving the state? How old was she when she left the state? Who was the man that you see in the video that greets her, which seems strange as the article goes out of the way to say that she wasn’t sure if she wanted to reconnect with her family.

[SunkenCiv]

Her brother. Naturally, they’re both in geriatric condition.

[Svartalfiar]

Some questions the article doesn’t mention.

Well the second paragraph of the excerpt answers at least one of your questions:

Audrey Backeberg left her Reedsburg home in July 1962 when she was 20 years old, a press release from the Sauk County Sheriff's Office said.

And that pseudo-answers some others; the babysitter probably wasn't babysitting a 20—year-old, so that explains why she let her out of her sight. They were likely friends, so that half-explains why she went with her.