meaning of dreams friend died

i dreamt about my friend who died during 2006.she was vvisiting me in the dream&we shared happy moments&i was ashamed to ask about her death.the 2nd dream,i saw myself at a wedding of my brother in law&his current wife,they were both wearing creamwhite suits,i didn't know anyone at that wedding which suprised me,not even their kids;but suddenly my best friend who doesn't know the couple was there,she was afraid to chat with me but only told me in passing that i shouldn't worry her attorney husband was investigating&i'll get all facts.