Weaning her completely may help, but you could just night wean her. It may create a couple of nights of more sleeplessness for you, but offering other comforts or if you have the option of having someone else to help comfort her, like a spouse. Try to reduce one comfort nursing session per night. Have you thought about offering a snack right before bedtime to ensure that it isn't hunger?
It is developmentally normal for a 14 month old to still be waking in the night. Even babies that "sleep through the night" actually DO wake, they just comfort themselves back to sleep. Removing her comfort item (nursing) may not reduce the actual need for the comfort.
I don't think that crying it out is ever an option, but that is just my opinion. When babies cry, they have a need or a want that needs to be filled.