with your little girl,have you tried putting her down and walk out the room but say,i will be back in a few seconds and then walk back in the room and do this quite a few times,i feel your pain as one would be clingy and then they would swap over,they did get better and did stop been clingy,the only time there clingy now is when there not very well,i do feel your pain as my little girl is a very good sleeper but my little boy is'nt,he his getting better though,they have just turned 2 today and i have to admit that sometimes when he wakes in the night,i give him some milk and that normaly does the trick,older brother was a bad sleeper,then when he turned 2 he stopped,so iam hoping younger brother will do the same