It's done! I am out to my mom

The beginning basically went as planned, we sat on the couch and I read the letter to her. After I started reading and she realized exactly how serious it was she got up and sat across from me and held my legs to comfort me. When it was done she sat next to me and we just hugged for a while and talked a little like that. She said she was really proud of me for having the courage to do this and that she supports me. She also said she had always known that I wasn't comfortable in my own skin, although she had thought it wasn't anything like this and maybe I was gay instead.
One thing that surprised me was that she said this wasn't Earth-shattering news and she didn't think it would be to anyone else in the family, although it will definitely take time to get used to. The weird thing was this just felt like talking, I was expecting to be all nervous but she was just so accepting that I felt really normal. We took the dogs out for a walk then went out for lunch and had drinks. It was basically a normal day with my mom except the topic of conversation was different. In the end I realized I was just really happy and relieved.
I know not everyone has an experience as positive as this and I'm pretty lucky, but hopefully it goes to show that coming out isn't guaranteed to suck. I hope others in the future have similarly positive experiences!