If you are worried about a few ounces difference in scope weight, then you have other issues. How old is your daughter? It seems odd that any kid would have issues with the recoil on a .260. If you are going to go with a mild load, there is no earthly reason to go full copper. Use 129 Hornady Interlocks at 2700+ and she will kill every deer that she shoots at, with light recoil. If that is too much recoil, then I don't know what to say.

I have seen very small girls shoot '06s.

You did not "seen" anything, you "saw" it.
A "creek" has water in it, a "crick" is what you get in your neck.
Liberals with guns are nothing but hypocrites.