Word of caution about trial lessons, they’re useless as far as determining aptitude.
Trial lessons serve one purpose, selling flight training.
I’ve done 100’s.
Anybody who claims they can determine suitability by a 30-45 min flight are absolute charlatans and should never be dealt with again.
I’ve had many students who were slow to solo, I’ve had many students who were quicker to solo and most of them finished training within a handful of hours of each other.
There are many different flying jobs in aviation, “airline pilot” just being one of them.
I think your timing is pretty much spot on.
Depending on training you’ll be marketable anywhere from 3-7 years from now which will put your child in ‘leaving home’ age bracket.
Your PPL training needs to be ‘pleasant’ as it is both a recreational license and a first step towards a career. Find a club or school where you feel welcome.
After your PPL training have a serious conversation with yourself.
If you’re anything like a lot of us you can’t wait to continue.
Best wishes!
* Maybe consider doing your Private Pilot together with your daughter.