Marrying two sisters

Q: My husband manipulated my sister and got married to my sister without giving me a divorce. When my sister got to know that their marriage is not valid after a year, she got married to another man. That man left my sister beacuse he thought she did nikah on nikah, but that was not the case.

Wazifah for repelling bad thoughts before sleeping

Q: My grandmother who is a widow has asked me to ask this particular question to you:

She has asked for any wazaif or any specific azkaar to be recited as she is saying that before bedtime in the night she gets some bad thoughts. She said "aise taise galat galat khayaal aate rehte hai"...I don't exactly know what she means by it but she regularly recites prayers and azkaar and Quran before bedtime. Kindly help with some azkaar/wazaaif.

Who should participate in the ghusl of a deceased person?

Q:

1. Who should participate in the ghusl of a deceased person? Should it be done by the experienced people of the burial society, or should the relatives do it? What does the Sharia and Sunnat prefer?

2. A person gives a directive while living that his children should not do his ghusl because it will be an emotional/traumatizing experience for them and it is better done by strangers. Is this thinking correct?