assertive female
A female character who is sexually assertive, romantically aggressive, or in control of her partner. A milder version of femdom.
For sexual interactions, this is typically when the girl is on top or clearly in control - no frowning, gaping, blank stares, etc. - often with a naughty face. Basically, she is screwing her partner instead of the other way around. If the partner is also shown to be enjoying it, it's also happy sex. This does not include pegging.
For romantic interactions, the girl is actively displaying affections towards the partner. This does not require any aggressive, sexual, femdom expressions, as long as she's the one that's initiating the interactions. If both partners take turns in activeness, this is also a reversible couple.
Examples
