I edited my analysis of Son Of Poy into a previous comment I made. Considering that I have a long shift tommorow, there might be a day or two of delay before I can look at each member of Ladies' Night properly.
Edit 1: Oh boy, finally getting back to this. Alright, let's start with:
PONIARD
First impression: Poniard is, much like her former olympic sport would indicate, a duelist.
In the Green Zone, Poniard opens up with an array of options. Fleche ensures that she will be able to deal damage to most foes, while Prise De Fer gives her a way to knock aside a single strike while continuing the offensive. Pret Allez is basically the definition of mechanical flexibility (barring certain Red Zone abilities), and being tied to Alertness gives it plenty of narrative flexibility.
In the Yellow Zone, Poniard sticks with her metaphorical guns. Remise gives her even more durability than Pret Allez, as well as providing bonuses to make her actions count. Redouble will lay down the hurt on a single target with ease, and maybe even patch up Poniard a bit. Coupe Pass gives her a limited degree of multiple target interaction, although Pret Allez is likely more reliable in terms of hitting two targets at once.
In the Red Zone, Poniard pushes herself to stay in the fight. In Quarta is a powerful defense for her, enabling Remise to be triggered in response to every single attack on her, with a health or twist cost if multiple attacks comes at her in the same turn (minion groups, certain villain abilities, etc). Botta Segrete gives Poniard a sizable bonus for her offenses to hit harder, and possibly to make her Remise more effective; That's on the narrative of what the bonus is. Finally, Corps a Corps weakens foes she engages with. With multiple Attacks from Redouble or Pret Allez, she'll be able to pin down one or two targets quite effectively. Important note though; The Hinders will not be applied until the entire Ability in question is finished resolving.
Overall? Poniard can close with a single target and maintain her superiority while whittling down them down. If I was going to point out a weakness though, Poniard has a lot of trouble dealing with penalties on her, and really with multiple targets. Pret Allez and Coupe Pass help slightly with the latter, but suffer a lot from the former.
In terms of a team setting, Poniard wants allies who can handle mulitple foes at once, remove penalties via boosting or other means, or arguably both. Poniard isn't the party member who can operate equally well against all manner of dangers; She's the party member who pays off in spades from solid teamwork and planning.
Edit 2:
LADY EVERYGREEN
First impression: Lady Evergreen is a capable blaster.
In the Green Zone, Lady Evergreen begins with solid offensive options. Lash Of Thorns enables her to blast a target apart, while Grasping Vines allows her to pin down that same target with some possible damage. Hemlock allows her to strike a multitude of targets at once, a potent tool in the green zone.
In the Yellow Zone, Lady Evergreen expands for some utility options. Living Kudzu gives a flexible minion, while Cycle Of Life incentivizes her hunting down minions. Botanical Sacrifice is a straightforward way to execute a mid strength minion, and can also hit a second target at the same time.
In the Red Zone, Lady Evergreen puts down roots. Earth Arisen locks down a potentially massive number of targets, possibly taking them down in the process. Redwood Hart allows her to negate incoming damage, at the cost of taking a penalty instead. That is a very strong defense, especially combined with Tide Of Green giving her a chance to slow down for a turn and prepare for a big action on her next.
Overall? Lady Evergreen will be a potent force in most combat situations. She has mobility options to get from place to place on a chaotic battlefield, and will have no trouble taking down large targets. Redwood Hart will require some careful use though; Large penalties can still be crippling.
In terms of a team setting, Lady Evergreen brings heavy firepower to whatever team she is on. She'll benefit from teammates who can provide Boosts like anyone else, but especially so in the Red Zone should Redwood Hart see heavy use. She'll also benefit from teammates who can deal with opposing bonuses and remove penalties reliably. Both are often underlooked utility options in my experience.