to ask how to explain to DD that I've had to stop contact?

[AlmondAmy]

DD is 7 and I've been advised to stop all contact with her father by childrens services because of a safeguarding issue. DD is unaware that what was happening is wrong and I don't want to tell her because it'd influence what she says to CAFCASS when we go to court. But I have no idea how to explain the lack of contact - it's usually fortnightly. Aibu to ask for ideas?

We had to have contact stopped with our 'dad' because he was a sex offender.

It was explained very simply, as in 'because he's done something to little boys that he shouldnt have done'. I accepted it, think its the best route to go down.