Romi jumped and screamed when her floo came to life, instinctually pulling her wand from her bag and throwing a stunning hex behind her in her hysteria before running for the bedroom without looking behind her.
If she had thought, for even half a second, she would have known it was either 1) Blaise, 2) Her Parents, or 3) Eddie - she only four people with direct access to her floo. But she hadn't and she was a wreck anyway, so who could blame her for slamming her bedroom door shut and diving behind her bed to curl up in a watery mess on the floor.