Before there's a heated controversy over cassette ratios (of all things), I recommend a closer ratio for OP because she indicated that after up-shifting to the big ring it was too hard. There's a big jump in the cassette gears she's in, and that's why she has trouble finding the ratios she likes.

The fact that I personally like a large range in cassette (I run 11-30 8-speed myself) does not influence my suggestion for OP.