I just now attempted to put my female Cambodian in my community tank.
I have cherry barbs, neons and a bristlenose pleco in there.
I was so worried about what SHE would do them, I never stopped to think what they might do to her.
She seemed very pleased with her new huge home, was swimming around quite happily and had no ill will towards anyone. Then the male cherry barbs decided that since she's red, she's a female cherry. They started chasing her, and of course she had no clue why. Poor thing, I had to remove her after 5 minutes.
So, if you want to put a single female in a community tank, make sure it's of a colour that won't leave any chance of mistaken identity.
I think if my girlie were blue or green there would be no problem.