I agree with SirChenJin on the first page and then many others afterwards.
If you don't like the term, then that's your prerogative - don't use it, but it really, really, really isn't something to get worked up about.
I'm also curious, what is it about the term 'girls' that offends you. It is common parlance for a (friendship) group of females of any age. It's one of those many, many words that has evolved over the years, to be used in a wider variety of ways than the original "female child". Personally I think it's a nice term - friendly, descriptive, clear - but am happy for you not to use it if you don't. Just can't understand your angst.