Charlotte had colic quite bad. We used Gripe Water with her but I think infacol is pretty much the same, we used that with George and found the same kind of results.
We found Charlotte liked to be held upto our shoulders (so she was facing behind us) and her back rubbed up and down, also we used to lay her across our knees and rub her belly in a circular motion or face her down and rub her back. It seemed to help ease the tummy pain for her.
George used to like to be held and have his bottom patted. I think mostly it was probably more of a comfort thing for him than anything, and the rythmic patting usually got him to sleep for a short while
LOL.
Something I found helped with them both was a bit of baby massage after their baths.
I hope you can ease it a little for her xx