S.P.
Everything is fine.
Little Empress is developing at her own pace and on her own schedule.
Some kids go forward, some go backward, and some just roll over a lot.
Do not worry.
She'll crawl forward when she's ready.
And then, after what seems like only a few weeks,
she'll start wearing lipstick and will want to date the high school lettermen.
Take a deep breath and just enjoy it all as it happens.