How should I deal with my mother and sisters who err in their speech, dress, and actions, and if I advise them, they become furious and my mother gets angry? Will I be sinful if I keep silent to avoid problems?

Firstly: Pray for their guidance and righteousness, for the hearts of servants are in Allah's hand.

Secondly: Seek the appropriate time and be gentle and lenient in advising them. Allah Almighty says: "Invite to the way of your Lord with wisdom and good instruction, and argue with them in a way that is best."

Thirdly: If you have offered advice in a legitimate manner, you have fulfilled your duty. It is incumbent upon a Muslim to offer advice and reminders as long as there is hope that the advised will benefit. If one fears that it will lead to a greater harm, then it is obligatory to abandon it.