Husband DD13yrs.
He moved 100 miles to be with me, however, he always attends contact etc. We has our own DD 19 months together, his DD adores her.
We got married a few months ago, and it was first time his DD had met my DD age 12 & DS age 7,[from prevous relationship]. His DD and my DD got on fab, so well infact they have added each other on facebook etc, for chats etc. Fab we thought.
However, in time me and DH been together, seems his daughter only makes any contact, phone calls etc near her birthday and xmas, we try and give both DD about the same, in last 3 years, his DD has had 2 phones, a laptop[for schoolwork etc]digital camera, as main presents, and had lots of other bits beside, even DC shoes which she asked for £50 quid.W has discovered after, her mum only gave her £5 in card, for birthday.
We had planned to give my DD £150 and same to his daughter, aswell as smellies, clothes and few other bits etc. However, she has asked for a£300 blackberry phone[we only bought her a phone in feb for her birthday], DH said no, as she had phone a few months ago[wouldnt have mattered if she had only wanted a £30 phone.
She never bothered wanting contact on halloween, which my DH accepted,and beleives it is because we dont bring gifts for halloween. DH aims to have religous contact with DD her birthday, easter, his birthday, halloween, and xmas, and whatever she wants in between, however, like said had phone call a few weeks ago saying she wanted this phone.
Got told yesterday, she doesnt want my DD to come to see her,for visit next saturday[perhaps she felt in future maybe] however her and my DD, have regular contact on FB.DH is on facebook, though his DD never chats to him etc
Future plans would be she would have over nights down here etc,this is what she saying to us she wants to happen, however, she is telling others different things.
Husband is convinced she only wants the gifts, almost to the point, if he dropped them off without contact, she would be ok with that. 
Only contact she has actively made to her dad in a year is, 2 weeks before xmas last year, 2 weeks before her birthday in Feb, and 2 weeks ago, to let us know about the phone she wanted.