How often a girl should shave her pubic hair?

theres no "should"

given the tone of your Q I might just comment - lots of young women seem to be under the impression its necessary to be as good as hairless - it isnt

this is a relatively new development obviously driven by porn and the countless businesses telling you to get rif of your hair

until the 90s few people removed their pubic hair rather trimmed for comfort and certainly before that trimming the bikini line was appropriate especially when yeah .. wearing a bikini

so

you make the choice for you

you will find that guys dont actually want a woman to look like a child

cheerio

As often as she wants. If she liked it clean and neat she might shave every other day. If she likes it messy (not saying its messy to not shave down there) then she might never shave or shave ever few months. Definitely differs girl to girl

As often as you want. There is no law or obligation to shave it. It's entirely a personal preference.

I shave mine every time i shower

However often she wants

how often you want

do it when it starts to look unclean if you wish, i think that is the best judgemnt