Personally IMO at that age sleeping is not an OPTION!

If she is not able to self soothe and is 'thrashing' while you try to help her to soothe by rocking or rubbing her back I would take a very big blanket and swaddle her like you do a new born so that the fabric is tucked behind and wont come loose if she wiggles to give her no choice but for her body to be in a still position so that she can learn she needs to be 'still' to fall asleep and than you can just lay her down and either rub her back and sing her a soothing song and show her how to 'fall asleep' on her own ... each day spend less time 'soothing' her until you are able to lay her down and she goes on her own.

The first time she might 'scream' IME once they realize that 'hey this is warm and secure' she will calm down and fall asleep and likely sleep for hours .... eventually she will not need the swaddling because she will 'learn' to trust you and not be so overtired as to not be able to self soothe.

I had an 12 month old start last year and the swaddling worked wonders for him ... he is an awesome sleeper now.

The also sell 'sleep sacks' on the market that work for all ages as well although blankets are in the house and free

http://www.babyinabag.com/?gclid=COP...FUMTNAodv34Ajw