You agree that what your both cousins have done is wrong and that texting is not permissible in Islam between non mahrams.

Therefore, you have nothing to do with it. Otherwise, it would be an approval from you that what they had done was right. Therefore, don’t involve yourself in it.

My male cousin was texting my female cousin and her mother got mad and took her phone and started to text back, but my male cousin automatically knew that it was her mom because of the language change. I wanted to know how I could help my other cousin she thinks she is to blame.