You can dislike her, not support her, that is your choice and it is it American way. Banning her from services and de-platforming is not something should be encouraged or supported. If you are justifying this, and saying she should find an alternative, then you should also support when people of faith refuse to service/do something that goes directly against their faith and conscious, for example.

Plus, if we are still in a Constitutional republic, and equal justice under the law is not just words, then the civil rights acts which were signed into laws all ban discrimination. If you ban today because someone is in the party you don't like then expect the same done to you, if one day, the shoe is on the other foot.