I'm torn between these two, as I only have room for one more name in my top 50, but I love both. Which one do you prefer? Abigail would likely be shortened to Abbie, Leah would stay the same. For MN's I like Abigail Rosalie and Leah Charlotte.
I'm not going to be much help as I like both equally. Just be aware that she and her friends will find their own shortened versions in the years to come and that will be totally out of your control ... So maybe add that into the decision?