Participating in the funeral rights of a non-Muslim

Q: My wife is a converted Muslim and her father has recently died who was a Hindu. There are some rituals that only my wife can perform as she is the only child. I am not sure wether to allow her to perform that rituals which may involve a Puja as well. Can you please guide me what happen if she still perform such rituals despite knowing that I am not happy if she performs those.

Viewing an animal before purchase

Q: A local supplier of sheep uses 1 of 2 methods in purchasing his sheep from a distant farmer:

1. The weight and description is given to him by the farmer telephonically.

2. He views digital images of the actual sheep as sent to him by the farmer.

Will the transaction of sale be correct in both situations considering he has not seen the actual animal?

Condoning the wrong

Q: How do we respond to the foolish and stupid statements of fellow laymen when they comment on Deeni matters wherein they utter completely incorrect things? Like those who comment on the Qur'an Sharaeef, Ahadith, Masaa'il and the Auliya with their own concocted reasoning and personal thoughts. Not salafi's etc., but just fellow faasiq lay people who act as Deeni experts. Many a time, one is not in a position to reason with them, or there is the fear they will utter even worse commentaries on the Shari'a. When these people utter their statements of personal, clear-cut haraam, reasoning, can we respond by saying 'Ok' - maybe it is a neutral statement (I do not know)? Or will Allah Ta'ala punish us for not arguing the Haq despite these people being stubborn with their commentaries on Deen?