1. We all know it can be dangerous. Split second decisions are made all the time. I can put myself in it but not confident with her. She's never ridden before. This is mainly my concern.
Cycling really isn't dangerous unless you put yourself in dangerous situations. i.e. dicing with traffic at speed, pointy end of races etc.
Any social cycling/club rides/*most* chaingangs should be as safe as any other sort of endurance sport in the vast vast majority of cases. Unless your club is full of dullards who need stabilisers (on the rise i understand)
It's motorists, media and the courts that have persuaded everyone that it is horrifically dangerous and that you'll die as soon as you start cycling.......
Unless they are a CURRENT endurance athlete, you don't stand much of a chance.
My GF did a bit of running/social orienteering as a teenager, then nothing into her mid 20s when she took up cycling, certainly wasn't into sport in any meaningful way, more beer and food. Took a year or so from first getting on one of my spare road bikes to her first race (3/4WVJ) in which she finished 2nd from last (only finishing just ahead of friend who persuaded her not to quit, and almost an entire club who got the hump as the "flatish" course had a couple of drags in it. They got off on lap 1.)
In her second race season she was bunch finishing in mens races and getting results in womens (top 20's).
Third season it was the pointy end of national series womens events (top 5) but not often enough to get points to upgrade beyond 2nd cat. And a few results (around top 10 ish) in mens/mixed events. Much the same in her 4th season.
Then we emigrated to a country that has an utterly dire race scene and a club culture that is laughable.