Privilege in matrimonial communication

Hello Learned members,

I was going through an article of Privlege communication in marriage (link below) and got bit confuse. If its previlege communication which happens between husband and wife then how come wife can put all the matter before court in open without consenting husband ?? In that case all talk which happened in four walls of bedroom should also not be presented / should not be considered by court as proof, isnt it ??

Please share your views..

Thank you.

https://www.legalserviceindia.com/article/l96-Privilege-In-Matrimonial-Communication-And-The-Abuse-Of-Its-Sanctity.html