How to deal with a Player that only wants to play evil characters

[payn]

Need more info before I can give better advice. However, there is two things mentioned in this thread I recommend you not do.

1. Recommend she get psychological help.
2. Try and "fix" this in game.

Also, sort of amusing OP's handle is "Dark Crisis".

 

[Spellslinging Sellsword]

The usual advice is to talk about it out of game if it's a problem. You can also run a campaign and go all in on evil characters. For example, run an all evil Drow campaign set in Menzoberranzan. The group is a house trying to move up in rank.

 

[Dannyalcatraz]

Step 1: tell them you’re not comfy running that kind of game, etc.

Step 2: play the game, and let the consequences fall where they may.

 

[aramis erak]

I'm sure there are people who played good characters consistently who have ended up in prison for a variety of modern evil acts, too. I wouldn't read too much into their childhood choice of pcs.

Not a one of the guys I know who went to prison played good characters with any regularity.

 

[Umbran]

1. Meet a rival party of evil NPCs who kills the PCs just for the heck of it.
2. Have a new session 0 where you discuss what kind of game everybody wants to play.

Killing characters beforehand, probably "to prove the point," is likely to have players come to the discussion filled with resentment.

Just have the discussion. Skip the killing.

 

[Golden Bee]

Step 2: play the game, and let the consequences fall where they may.

Impossible! You're the GM, not a force of nature. Your responses are still choices.
Rather:

Killing characters beforehand, probably "to prove the point," is likely to have players come to the discussion filled with resentment.

Just have the discussion. Skip the killing.