The main female characters are Laureline (Cara DeLevigne), Bubble (Rihanna) and an alien princess character. None of the female characters speak to each other even when present in the same room. All of their dialogue is directed to either Valerian or a military officer.

There is also the mother of the alien princess. She talks to her daughter (who is inside Valerian's body) and she says she misses her a lot. Valerian (or the princess) replies: "me too...she also misses you". It is a little confusing but I think they're really talking to each other.

It almost passes point two - when Bubble helps Valerian break into the green boggle-eyed alien section, 'Bubble' briefly says hello to Laureline - but she does so in the guise of Valerian because she is a 'glamour box' or something and can shape shift.
There is also a scene where a female alien is showing Laureline dresses - they're not talking as such, they're making noises. Laureline screams at the female alien and the female alien screams back and covers Laureline in spit.

Even though these 2 characters would be discussing, they're clearly not identified (alien princess & the mother of the alien princess).