Rolling Over and Sitting Up

AnnMarie desperately wants to be mobile. She struggles each day that she is not despite her efforts. I think she understands that she is not strong enough and used to just give up, but now she keeps going and going. She can pull herself into a sitting position (if she can grab onto something). Also, she can now roll over if she has something to brace her foot against and get herself started.
Here is a little of her progression:

First tummy time - trying to get her head up...she gave up after about 30 seconds
Another early tummy time - again just kicking and trying to figure out how to turn over.
The first time she hasn't screamed when laid on her tummy - she had her wrist rattle strapped to the change table to look at and distract her.After 5 minutes or so she ended up on the other side of the change table tummy up - I think she even surprised herself on this one.
With one victory she was gun-ho. This is her sitting up by herself on the couch. After a minute she fell over on her tummy and rolled herself onto her back. Yay!!
Note the shirt - "Cowgirl in Charge" How appropriate as there is no doubt whose the boss at our house.