That's why Mikan said magical girls usually don't have super strength, it was unrelated to the ether body.
I hope Shamiko can use the Rod of Healing more often and that reversion was just a gag, this would be the final of volume 6, it's about time she levels up outside of dreams.
It's nice Shamiko is determined to protecting them instead of being protected from now on, she even put aside her perversion for a second to heal the girl that she loves her smile, but I don't think it's a good idea for her to keep so many secrets, she's already keeping a secret: Gusion and now Metako's memories that directly involve Momo? I feel like Momo won't be happy if she realizes Shamiko knew this before Shamiko tells her herself.