I had a really fast greenway ride today because the trails were all but deserted due to our s. Texas winter weather. 50 degrees, overcast and low humidity - it was great.
I began in the middle, went to one end, crossed back and went back to the other end.
Near that 3/4 turnaround, I could see a mother ahead through the trees herding 2 small kids, so I rang my first announcement bell, and another as I approached closer, and of course I slowed way down to ride by them.
The mother apologized. I told her no, you guys have a blast.

On my way back, the mother did something really cool - she did nothing. She didn't lunge for her daughter on the tricycle or yell at her.
She left her alone to broaden her own horizons.
As I was about to pass the little girl I gave a soft ring and she looked over her shoulder to see where I was.
Clearly, the mother felt safe with my awareness of her daughter.