Divorcing one's wife for insulting one's mother

Q: My wife insulted my mother for jealousy over my second wife. My second wife used to live with my mother. Initially my wife who lives with my mother phoned my other wife through my mother's phone and insulted her, as a result she called back to my mother's phone and insulted my mother badly. She used disgusting words when she was insulting my beloved mother.

What should be my reaction to this, shall I divorce her or not? Please advice me on this matter.

Hurmat-e-mussaharah

Q: If I touched my mom with lust and hurmat-e-musaahara occurred, now I repented a lot and promise to Allah that I will never do it again.

1. Is my mom still a mahram for me, and do we still have the relationship of "son and mom" ?

2. Do I still have the relationship of "father and son" with my father?

Esaal-e-thawaab

Q: I have a question regarding esaal-e-thawab. When we do a normal act but for the sake of Allah we get rewarded. For example, if we eat with the intention of being able to fast the next day, then we are rewarded for this intention even though eating is not an 'ibaadah in itself.

My question is: can we donate this kind of reward to the deceased (even though it does not come from a direct form of 'ibaadah) or is it only reward from direct types of worship (praying, fasting, etc.) that can be rewarded?

Hadith on gossiping

Q: In the below hadeeth, kindly elaborate the point of gossiping as it is quite a common act these days to kill time among the young ones and women.

Sayyiduna Mughirah ibn Shu'bah (radhiyallahu 'anhu) reports that Rasulullah (sallallahu 'alayhi wasallam) said: 'Indeed Allah has forbidden for you:
1. Disobedience of mothers,
2. Refusing to pay what is due, but claiming what isn't due, and
3. Burying your daughters alive,

and He dislikes for you:
1. Gossiping
2. Asking too much, and
3. Wastage of wealth.

(Sahih Bukhari, Hadith: 5975, 6473, 1477 and Sahih Muslim, Hadith: 4458-4461. Also see Sahih Muslim, Hadith: 4456)

Intimacy with one's spouse

Q: I am married for 6 years and want to have clarity on some topics which will sound disgusting but if I have clear and right information about the same I will carry on forward.

1. In Islam, is it allowed to see, rub, caress, kiss one's wifes anus after cleaning that area and making sure nothing unhygienic is there.

2. Since anal sex is haraam, can I massage/rub with my finger on my wifes anus. I wont be doing any penetration with hand/penis.

3. Can I have sex with my wife in the bathroom and kitchen or any other place in my home.