I was just talking with my SO's sister and we made plans to get our nails done together before her prom and graduation. She's bummed because her mom is making her get a french manicure. Not only isn't it my PFSIL's taste, but her nail shape just isn't right for it.
Unfortunately, her mom paid for her prom dress, shoes, hair, graduation outfit, and a bunch of other stuff. Her mom wants to pay for the nails.
She pays, she gets a say.
Would I be in serious danger of stepping on major toes if I offered to pay for the nails, instead? It was something I was going to offer to do before I found out her mom is paying, if that makes a difference.