Do you have to wake her from the naps or in the morning? Maybe she can handle each nap (apart from the last one) to be a few minutes longer? Or bedtime 10 minutes earlier...
My DS didn't crawl until he was 11 months old, now he turned two and draws numbers and trains
At 7 months he didn't even turn over yet, had max 2 hours A-time and was on three naps... However, enough sleep is crucial for happy babies, so if she seems tired maybe she can sleep a while longer somewhere...
But don't worry, sounds as if she is doing fine