It’s HER inheritance, not yours. If she wants to buy a car… that’s up to her. It doesn’t matter if you think it’s necessary or not.

Are you mad she didn’t invest in your crypto obsession? Would you have the same attitude had she “took into consideration your opinion” and/or invested that amount of money into your crypto or something else you deemed necessary or needed?

Do you take into consideration that you are living pay check to pay check with two kids when you are funnelling money into crypto?

It’s her inheritance, it was money left to HER to do with what she deemed fit. It’s not money she took from the family pot and wasted.

You have bigger issues than her treating herself and buying herself something that will get used and be of use…that you’re willing to throw a tantrum and consider/threaten divorce over this.

YTA.