She can be seen doing some exercises to strengthen parts of her body. Until she took notice of you, Quickly getting up.

Hi there! I am the Wii Fit Trainer!

...I am looking forward to working out with you, Let's get to work and have some fun! She said with a bright smile while flashing a thumbs up.

From the looks of it, she's determined for people to have a healthy lifestyle. She will do her very best!