I accidentally outed myself to a friend

I have a friend named Barb who didn’t know that I wear diapers until today. We were going to go for coffee and she came over to pick me up and I got into her car (which has black cloth seats) and I made 2 big mistakes, the first being I wasn’t wearing a onesie, I was wearing a tee shirt. The second mistake was that I didn’t realize how much baby powder I had put in my diaper and when I sat down in her passenger seat I made a diaper pouf (for those who don’t know what a diaper pouf is, it’s when you have too much baby powder down the backside of your diaper and when you sit down with any degree of force a plume of baby powder shoots out of the back of your diaper). I was hoping she didn’t see it but she did and what’s worse is that it left a white mask on the seat back which she noticed when I got out of her car. Now the reason I mentioned the onesie is that unbeknownst to me I had a couple of inches of plastic diaper backing sticking up above the waistband of my jeans and when she saw it she asked me if I was wearing a diaper and it caught me so completely off guard that I had no choice but to tell her the truth.
“Yes, I’m wearing diapers.
“Unm, ok. Why are you wearing diapers?”
“I’m wearing diapers because I like wearing diapers.”
“What do you mean you like wearing diapers?”
“Just what I said, I like wearing diapers.”
“How often do you wear them?”
“I wear them 24/7/365.”
“Do you use them?”
“Of course, that’s half the reason why I wear them.”
“Do you use them for number 2?”
“Sometimes, ya I do.”
“And how long have you been doing this?”
“Off and on for pretty much my entire life but 24/7 since I turned 30?”
“So you’ve been wearing diapers for as long as I’ve known you? No way.”
“Well let me put it to like this. In all the time I’ve known you have you ever seen me go to the washroom when we’ve gone out for coffee?””
“Now that you mention it, no I haven’t.”
“That’s because every time I simply went in my diaper.”