Its very nice of you
But you better let her know beforehand.
Anyhow,for visitors visa you need letter of invitation, provide info where you tend to stay and so on.
If you know some other people who could you invite to CA, you may ask them and then it really could be a surprise to her if you show up unexpected on 11th of Nov.
BUT...visa issuer might find it very suspicious that you are going to CA,married with a citizen, but somebody else is inviting you.