What's odd in a way is that Wanda does some of the same things that Delphie is doing. But that they tend to work out the way she wants them too. Of course she also actually tries to work with other people (Parson in particular) and will even tell Stanley what she is doing if it will get the job done. Wanda can be even more manipulative than Delphie but she does it for very different reasons than Delphie.