Outside of the abdl and kink community I have only told one person and that is my mum, i still live with her and have kept it secret for so long but a few years back as I was wanting to switch to cloth diapers for most of the time and needed to be able to wash and dry them.
I decided it was time to tell her so that I could do the laundry regularly and properly abd not have to worry about her seeing them in the machine or on the line drying.
I've known for years that she would probably take it in stride and not be bothered by it as she is really open minded and supportive.
Her response after I called her into my room to saying i need to have a talk with her and told her I like wearing nappies and have done since I was in primary school, was basically...
"Oh, is that all. Well you can do your own laundry then I washed enough nappies when you were little."
And it's barely been mentioned since, aside from times I've asked for sewing advice to make them or onesies or when I've had some on the line and someone is expected to visit she tells me so I can bring them in.