Thanks elle, jazzgirl & cerasus for the help but the clues that you'll have given still does not fit. Sorry clue (4) is wrong it should be as follows
4) Shera's romantic counterpart (6) _ E _ H _ A
9) Start (9) _ E _ A _ N _ R _
10) Greatly inclined (5) _ L _ Y _
11) Toiling or working hard (7) _ _ A _ I N G
12) American university (4) _ A _ _ (I think its YALE but it does not fit)