My daughters biological father has been out of her life more than he's been in it, spending the last 6 years dipping in and out as he pleases leaving a trail of hurt and disappointment behind him. Classic story really.
I've never denied him contact and am in regular contact with many of his family who dd and I really get along with and have a good relationship with.
He had not been in contact since Xmas day last year and hadn't paid maintenance since March this year when, inexplicably, he took me to court citing that I'd made no effort to contact him and that his relationship with dd had broken down because of me. 
Luckily the court saw through this and put an order in place where by he had to go through several weeks of weekly letters and phone calls before he was allowed to visit her. I was simply asked to facilitate contact which of course I agreed to. Now I'm very used to being let down by him but I thought that after going to the effort of going to court he'd ad least see the first part of the agreement though and send her some letters before getting bored however we are nearly 4 weeks into the order and we have only received one letter. He knows we've received it and said that he would send the second one the next day and text me when he had done so so I would know to expect it. Almost 14 days later I am yet to receive either.
Dd is not particularly upset at the moment however I think she will soon realise that there is a delay in the letter coming.
How do I tackle this? Do I text him to prompt him? Do I apply to court for an enforcement on the order? If I do that then what can I expect?
I'm at a loss really, poor dd will have to face yet another disappointment and she's getting to an age now where she's really beginning to understand what's happening. Sending one letter and stiring all those old feelings up again before disappearing again is just plain cruel and why go to the bother of going to court when a)you were never denied contact and b) you don't follow the order?? I'm so frustrated and just want him to go away and leave her alone to be happy without him!