What if non Mangalic girl married to a Mangalic guy who is elder to her?

Then there is a danger on boy's parents.. they could die!!.. sorry but that's what vedas says!!I don't feel that marrying a non manglik creates problem It is just a perception of your mind.You can read about real people's experiences about manglism here:

http://shayariweb.com/Main.aspx?Cat=Manglik-Phobia