One thing that I didn't see mentioned was have daddy talk out loud about cool things mommy does or some way to verbally recognize fun things you've done with her. This shows how much respect that daddy has for mommy and also that mom IS a really neat person that gives and gives and gives.
Along those same lines, dad could perhaps coach daughter on giving you thanks, affection and showing you things as well. I suppose you could coach her on this, but I think the other parent is first choice for this.
p.s. you can look up "love languages" and find out what actions say "I love you" for the other person. They are: Words of Affirmation, Quality Time, Receiving Gifts, Acts of Service, and Physical Touch.