Assalamualaikum wa rahmatullahi wa barakatuhu. 

I hope this reaches you in the best of health and Imaan. 

I wanted to ask a question regarding my friends marriage, as she has just recently gotten married. She did nikah but the rukhsati has yet to happen, and her husband wants to start their physical relation before the rukhsati. Islamically the girl is not allowed to decline her husband when he calls her for this but my friend doesn't want to do it cause her parents told her, it shouldn't happen.

What should my friend do in this situation?

please respond asap

this is urgent