Here is an update after a week of using SM.
Sherry:
I have been able to play most everyday without a three year old helper for only a few minutes at a time.

On Hot Cross Buns, the best score I got was 37/37 with a 2. Usually, I get a 37/37 with a 3 or 4. If Maria is helping, I don't do so well!
I am doing better on playing Hanon exercise, but the white cat/ black cat is still hard when I try to play both hands especially. I usually play through one or the other nearly every time I walk past the keyboard. They are handy things to practice since I don't have to wait for the computer to start before I practice them.
On the Note Duration game, I made it to level 5 and got a 145. That game seems to be my biggest problem.
On the Guess Key game, I made it through the 4th tree and got a 693. I have only played past the 4th tree once and it was a lot harder when it started giving me # and flats. Is there a way to start the game on a higher level so I can get more practice with the # and b??
Also, should I move on to other songs since I pretty much have HCB memorized? Should I wait until I get the side number down to 0?
Maria:
She loves putting the cards in order frontwards and backwards. She loves playing along while I put cards in order. She doesn't hit the right note when she sings, but she always gets the right name and tries to sing a higher pitch(?) each time. And I noticed that when she is putting the notes in order backwards she sings Ti, La, So, Fa, etc she still sings each one a little higher than the one before instead of going lower. I try to sing louder than her so she can hear, but...

She likes the sound of her own voice too much!

On Guess Key game, she has sat still long enough to get through the 2nd tree! I think the highest score she got was 73.
On, HCB right hand she got 11/15 with a 43 for her best score. With me helping her she got a 15/15 with a 26.
Is the Kingdom of Tune something I am supposed to download or do I need to purchase it separately? I am nearly through reading You CAN be a Musician and I am learning a lot.
Thanks, Hellene and all the others at SM! We are really enjoying this!