I wonder if something is bothering her? Do you think she may be teething? Is she learning a new skill? If her daytime sleep has been messy, her nights will be affected. She may also be going through some sleep regression...
If you see that she's fighting you on naps and bedtime, it's possible she does need a little more A?
Rather than shh/patting, have a look at the link I sent you about pu/pd method.