If you take 3 young children, all under 3 years of age, away on a 'family' holiday and then decide to go out every evening, eating and drinking, to a nearby bar/restaurant leaving the children home alone, completely unsupervised, in an unlocked holiday apartment and then find the eldest child missing I think most would consider 'we let her down' quite fitting? I would say its somewhat of an understatement and gross negligence is more fitting.
'She is dead', both parents 'know it', lots of 'other decent members of the public' suspect that 'Madeleine' is 'dead', who 'will fight tooth and nail', to 'prevent any lying bastard' getting awarded 'a single penny' (not '2p') and let me be clear about 'what I am about to say next'! - before embarking upon this supposed holiday break, both parents 'knew of the risks involved' regarding their daughter [`Madeleine '], they [the parents] are in' my opinion', 'fucking horrible bastards'! 'If' I am wrong, let 'the lousy bastards sue me', for 'the greedy amount of 2p' [oh, 'yes', I have made provisions, for such an outcome - 'a 1p (coin)at the entrance of the front and back door of the property where I reside. Please, be 'reassured', that 'I will' fight 'tooth and nail' to prevent any 'lying', 'good for nothing', 'scumbag' obtaining from me, 1p or 2p of my legitimate (lawful) income..
The 'McCann parents have lied, and are ' not telling us the truth'...
Of course, 'you can choose to believe what the powers that be, might wish to saturate your mind with alsorts of untruths' or 'misinformation'...