Salaam & Greeting

Greeting a non-Muslim helper

Q: My nani is bedridden. She has a female Christian attendant who comes everyday in the morning and leaves at night. She wanted to know if she can say salam to her when she comes in the morning. If not, then how should she greet her when she comes? Not saying anything appears rude and cold.

Not making salaam

Q: To make Salam to others is sunnah. If a person does not ever make salam to others, is he a sinner? Can we blame him?

If a group of people come to another group and nobody in the group does Salam, will they be at fault?