Just by pure coincidence today, my daughter and I went shooting at a private range. She was trying out a Ruger Security Six for home defense. I had a handful of old .38 Special wadcutter rounds that we burned through just so she could get comfortable with the feel of the gun. Then I gave her some real .357 SWC rounds to try. A noticeable bump up in power, even though the hole size is the same.
The entry hole might be the same size but I bet the exit wounds look a bit different :-) Good on you for getting your daughter prepared.