I personally prefer the square look most of the time (only maybe with a little less hair on the top of the head), it's so cute & kind of puppy like. BUT I also love change so I'd have to do a shave every once in a while. lol
I think now that it is summer time it would be a great time to try the shaved look. At least you tried it on her & can see for yourself which way you prefer. If you don't like it it will grow back. If you want it to grow back into a square cut it will save ya money too as it will take a little longer to grow out before she will be due to have another cut.
Either way she will look cute, she always does!