I am going to be honest with my feelings on this.

How dare the adultress have any say at all in you texting your husband. How can she demand any type of loyalty or have a comment on anything?

I would keep right on texting whenever I felt the need to. Not over excessively or anything but shoot why should you bend to them? They disrupted your life with their mess and I just dont see why you texting your husband the father of your children is a "bother".

She has nothing to do with your children therefore she should have no influence in how you interact with their father.

Just my opinion.