It was really hard to figure out what to say in the message to my half-sister. The first message I drafted was really long and super bitter, so I deleted it. The second was too short and blunt so I worried she thought it was spam/phishing. So I thought a lot over the next few days about what I would say. I finally just wrote it and hit send before I could overthink it.
Hi B,
I’ve recently found out that C is my biological father, which means you are my half-sister. Apparently I am the product of a youthful indiscretion over 40+ years ago, but I didn’t know the man who raised me wasn’t my biological father until recently. I have proof that your dad has seen, but he isn’t interested in hearing from me. I am not trying to cause trouble, but would like you to know I exist and would like to know family medical history, etc. I know this is probably shocking and difficult to hear, as this whole situation has been very difficult for me as well.
And that’s it. I’m not really sure what sort of response I want, but I do want a response.