The 6.5X55 sedish is good. If I was going to buy a new rifle it would be in the .260 rem., itwas made specifically for Whitetail shoots like a .243 and leaves amuchbetter wound channel.However, since you have a 30-06 honestly those new low recoil cartridges that Rem and Fed have really are light on the recoil and have heard first hand from a few with young kids that they are great! They still have more energy than a .30-30 and surprisinly less recoil. I would start there unless you really are set a new rifle for her.