Typically, the barrier of entry is lower for QA than roles such as PM. With the right opportunity, she will get a lot of experience working with tech teams and gain some insight into how to be an efficient PM. And the money can be pretty good too.
I was on a client where, over the course of 2-3 years, one of the QA testers transitioned to a BA/Scrum Master role. She constantly stepped outside of her role and helped with management.
Maybe something like internal documentation or the like. Then find a company, that lets it's employees grow (they do exists) and slowly pivot over to her end goal.
The reason most companies wants experienced PMs is that it is not nearly as simple as the books suggest. And not being technical makes it even harder to be a technical PM.
In addition to technical writing, another potential position is training. Teaching children isn't the same as teaching adults, but many of the skills will transfer.
Well it's quite a jump, going from teaching at an elementary school to doing project management. No wonder she's having a hard time finding a company willing to let her do such a jump.
Imho, if she wants to get into tech, she should at least get to understand what sub-field she is interested in and then join pretty much any company willing to hire her and work her way up.
You know... acquire those 3+ years of experience.
Of course, managing projects is not a task assigned to junior, so there is no junior jobs in that.