Quite a lot of hospitals have a policy of scheduling induction for ten days post due-date, so this is pretty normal. They can't force an induction, and there's no reason why your stepsister can't simply refuse, or not show up for it, but I personally found it preferable to negotiate from an informed position rather than go toe-to-toe with my caregivers. Ultimately I had chosen my caregivers and I wanted to work with them during labour, so I was more comfortable taking this approach. I felt that my wishes were respected because I was clear, calm and respectful in explaining what I wanted.

In my case I explained my reservations about induction, and we agreed to monitoring the day before the induction. As monitoring showed no reason for concern we then postponed the induction, then postponed it again after further monitoring. I ended up going into spontaneous labour before the induction.

The biggest concern with induction is that it is rarely conducive to active labour, and because of the intensity of the labour it often leads to a cascade of interventions.

I'm pretty sure there are some threads on here about the best way to approach an induction if it does go ahead, including active labour techniques. There is also quite a bit of info about inductions in general in this article.

Wishing your stepsister luck with her decision, and with her birth!