WIBTAH If I get a tattoo in honor of my sister's child even tho she doesn't want me to?
So my sister (28F) got pregnant in 2019. She has never wanted kids so she never planned on keeping this baby. She went through all the options and decided that abortion wasn't something she could go thru with. So she asked me (30F) to adopt the baby when born. Tragically, the baby was stillborn. During my sister's pregnancy she texted me asking for a ride to the hospital and from that moment where they confirmed the pregnancy i took her to every single appointment until the one where they said the baby was gone. She decided she didn't want me at the delivery so I didn't push. I did go to the baby's funeral.
Extra possibly unnecessary context: my sister was on drugs at the time when she became pregnant. There were 2 guys that could've been the father they both came together to get all the money she'd need to get an abortion but she decided against it. She decided to name her child. She didn't go to the funeral, and I had no one to go with me, so I buried her (the baby) alone. My sister decided not to give her daughter her name so instead of reading "Violet" on the tiny coffin it said "Baby". When asked about that decision she said she didn't allow her daughter to keep her name in case she got the chance to use the name in the future "for a child that lives". I am not sure if this child was going to actually be my niece or my daughter but either way i love her so much and I feel like a lot of my sister's choices during that time were wrong and did that baby dirty.
Onto the tattoo: I am planning on getting a pink and blue poisonous dart frog sitting on some violets. To symbolize my sister's child, my aunt that collected frogs (niknaks and that type of stuff not real frogs), and my own child that I miscarried and named after my aunt that collected frogs. My sister feels like I should not get a tattoo on honor of her daughter and I feel like it's the LEAST that can be done to give some sort of proof to the world that that baby not only existed but she was loved. I love her and think about how much i love her every day. So would I be the asshole if I get the tattoo in honor of my sister's baby even tho she doesn't want me to?
Edit to add: i am not asking if I should or should not get the tattoo. I am getting it as soon as I am able to afford it to be done perfectly. I'm simply asking if it is an AH move to people less emotionally attached to the situation. Outside perspective lol