It sounds like it could be colic to me. You might want to try the gas drops especially right before you feed her and watch what you are eating.
Mylicon did not help Karson at all but little tummies gas drops helps wonderfully.
You might want to try gripe water which the sell at Kroger, you might want to do a google search on it so you can read up on it.
My friend has triplets and they all had colic at the same time and gripe water helped tremendously.
It might be teething as well, teething tablet helps Tremendously as well as colic tablets both from hylands and they are 100% all natural they sell those everywhere.
Good Luck and this too shall pass.
God Bless
M.