[mrflibble]

I think Helen really wanted a reason to get into an argument with Chris/Ashleigh, actually. When she confronted them about what she'd heard the night before it just looked like she wanted a reaction from them, but they knew they hadn't said anything so were like 'whatever, Helen' and she was forced to back down. She knew she had an in to attack Chris with this thing, because she was pretty sure Mark and Ash would share it with her, but knew Chris wouldn't.