Fear not, friend!
I came out to my current girlfriend as a DL about 7 months in. I was nervous as hell about it. I did it via text while at work, because if I had to say it aloud, I would have never been able to. She was super understanding and curious about it. After a couple great conversations, then wearing under my pants when I was with her, then wearing nothing except a diaper as pajamas when i slept over, and finally diapering myself in front of her, I left 2 diapers at her house and told her she was free to try them out if/when she ever wanted to. Within a week or so, she had bought some of her own and was happy I had introduced her to the pleasure of diapers. So, clearly, she doesn't mind that I'm ABDL. She's very much into it!
That said, I still have had moments when I struggle with whether or not my DL side weirds her out or makes her think differently of me. It will burst in out of the blue when we are alone together, either making love or getting diapered before bedtime, but theyre more of a curiosity than a concern, because I know she's into that part of our relationship.
Those feelings almost totally disappeared when we were only engaging in DL play and casual wearing/wetting, and then came back when I started to engage in age regression and sissy role-play. She was definitely more hesitant/ conflicted about that than the diapers on their own, but in the past month or two, she's really embraced that too, experimenting and growing accustomed to it, both as a 'caretaker' and a fellow 'little'. That said, the self-consciousness is still pretty prominent.
So just know that those feelings happen to a lot of us, even when the situation is pretty much ideal. All I can say is: communicate with her about it, but don't be so worried about trying to read her that you end up turning her off to it by repeatedly forcing her to tell you that she's ok with it. After a while, that can be pretty draining and annoying.
At this point, she's either honestly ok with it (which I think is true), or she's decided that her discomfort is outweighed by her affection and concern for you and she wants you to be happy and comfy despite the way she feels (which i think is very unlikely). Either one of those possibilities is far better than what many partnered/married AB/DLs experience when they come out to their S.O.
So enjoy your padded life with her! Check in with her occasionally and casually, but at this point, take her at her word and ease your DL side into the normalcy of your relationship.
Best wishes!