Q: Assalaamu Alaikum.
Wa Alaikum As salaam,
Yes, a mother-in-law can hug her son-in-law and kiss him on the cheek or forehead since he is a mahram to her. However, if the mother-in-law is not old, then she must not do this out of precaution.
The groom cannot recite part of the Quraan as a part of his Mahr to the wife.
And Allah knows best,
Mufti Waseem Khan