Try probiotics, gas, drops, gripe water
Baby yoga
Bicycling legs ect.
Elimination diet could be something in your diet causing her to have gas or Allergic
Try white noise also to see if that soothes her there is a video on YouTube called "baby got colic" let her listen to that see if it helps. Just a warning the video is weird kinda creepy don't watch have to watch it, what I would do was open one tab put the video on full volume the. Open another tab and put a video for baby stimulation videos take the sound of it and allow baby to see the different images.
If your going to have nanny give bottles try getting glass bottles those are best and less air, dr brown bottles are great too! And they also have those in dr browns too!
Hope this info helps
hope this helps!