Importancy Raman lamp and Modh

I had attended and seen so many marriage but understand rarely of few religious things....
One of them is 

Raman Lamp and 

Second one is For Head's Modh...

Raman Lamp pick up by family's elder woman, or mainly mother of the boy who is going to marriage with lady.....yes not write girl but lady... Boy marry to LADY....

For all religious ceremony ladies who are involved in that, wearing modh on head.... With special reason...

I am trying for understanding and finding such few marriage ceremony..... but still answer is unknown to me... Your help for reasons would be considered as good work....

My wife told me that previously due to long ceremony of marriage don't broken home's puja, the lamp take along with the boy's jaan, hence the Raman lamp which is the embosing with mostly Ganesha, pickup by mother of the boy....

Second one is that is the information to all of the people that you may blessings the boy who is going to marry with a Lady.... during night journey ( heavy sense)

Jigar Mehta / Jaigishya