I (20F) made a digital Mother’s Day gift guide based on MBTI personality types—and my sister (24F) is furious because she's the one who got me into personality types years ago.

She’s always been obsessed with MBTI. She made me take the test back in high school and basically turned it into her brand. INFJ, the rare unicorn, the deep thinker—she wore it like a badge. I never took it that seriously, but I did find it interesting.

Lately, I’ve been trying to make some extra income (college + bills = stress), and I thought—why not take something people are already curious about (like MBTI) and turn it into something useful? So I created a digital gift guide with 160+ gift ideas tailored to each MBTI type. It’s cute, practical, and people actually seem to love it. I put real effort into it.

When I told my sister, I thought she’d be proud. Instead, she got cold. Said I “used her passion” for profit. That it felt like I took something meaningful to her and turned it into content. She even said, “This is why I gatekeep now.”

Mind you, I didn’t use her words, her work, her anything. I just built off the concept like everyone does on the internet. I created something original that actually helps people. I even considered giving her a shoutout but now I’m just confused because… it’s MBTI. It’s not a family secret.

Now my mom’s saying I should “make peace” and maybe give her a percentage, but I genuinely feel like I didn’t do anything wrong.

So… AITAH for turning an idea my sister introduced me to into something useful (and yeah, profitable) without involving her?