If you are considering naming a child, think twice about using a "cool" exotic name.
Think about your child having to visit school one day and especially girl groups will happily take any strange standout feature as a source for bullying (own experience with a girl in elementary school).
Having said that, Mathilde will probably be ok, Brunhilde less so, although it is arguably much cooler.
It's complicated...
Unfortunately, you got that slightly wrong.My daughter was one of the bullies... 🫣