Casting help

In the proposal to my editor for 'Coming Home', my next Harlequin Romance, the hero was clear.

Keanu Reeves in that wet T shirt is my army guy.

Now I need a heroine to match him...and I don't have her.

I used this pic of Jessica Alba but she looks too young and naive to be a single mum of a 5 year old, a woman who's given up her dream for her child, who knows about sacrifice and struggle and heartache.

So I need a new heroine.

Any ideas?