Background info: My dad cheated on my mom before they were married & the woman he cheated with got pregnant & took off. My mom forgave him, they got married, & had me. I always knew I had a half sister out there somewhere & that her name was Danielle.
Fast forward to 2004: I am on MySpace (I know, I know) & I get a message that says something like "Hi, is your last name BlahBlah? If so I think I'm your half sister." Well it turns out she NEVER knew that her stepdad wasn't her biological dad. She obviously didn't know I existed. She had some medical issues & somehow the "secret" came out. Since then, I met her two times & I'm the only person in my entire family that has. My dad's family is weird, it's like they don't want to know her.
Fast forward to now: She's engaged. I received an invitation to her shower about a week ago & a STD for the wedding last night. I have definitely ruled out going to the shower, it's 4 hours each way to get there & I will be completely by myself. I'm leaning towards also not attending the wedding. I think it will be REALLY weird.
Also, I know it goes against etiquette to tell someone they're not invited to your wedding but in this situation do you think I should have a chat with her? I feel like my wedding isn't really the time or the place to do the "Hey Dad (and rest of the family), this is Danielle, your daughter/niece/cousin/granddaughter" thing. I'm not sure if I should just say nothing, I mean obviously she'll get the hint she's not invited when she doesn't receive an invitation but do you think it's rude to not explain?