In the 2004 screenplay/shooting script, the writers show how Ennis's personal hungering influences him to attend his daughter's wedding, even if he has to cancel being a working cowboy on the roundup over near the Tetons:
ALMA JR.
Yes, daddy. He loves me.
ENNIS, also on the verge of tears, nods, almost as if to himself.
ALMA JR.
(pause)
Was hoping you'd be there, Daddy.
ENNIS
Supposed to be on a roundup over near the Tetons...
Something sags a little in ALMA JR.
Understands.
Nods her head.
ENNIS looks across at his daughter.
Sees her disappointment.
He stands. Takes a half-empty bottle of cheap white wine from the fridge, a legacy of CASSIE.
ENNIS
(smiles at his daughter)
...but I reckon they can find themselves another cowboy.
Takes two jelly glasses from the dry rack next to the sink,
unscrews the bottle top, fills both. Sits.
ENNIS
(raising his glass)
To Alma and Kurt.
ALMA JR. smiles, and clinks her glass with her daddy's.
ENNIS smiles back at his luminous daughter.
But his smile can't hide his regret and longing,
for the one thing that he can't and won't ever have....