Hi @SuzyQdad , unfortunately I have no experience of the Charge 3, and I haven't been using my fitbit for a while now. However, it really depends on your daughter's needs/goals for herself. I think a few answers in this thread have indicated the the standard "step" count is usually quite accurate when compared to a walking user. So even though the count will stay in "steps" and not "pushes", you can still use them for achieving goals. The main question then becomes what targets your daughter sets for herself. WHen using a manual chair, like I do as well, a flat or downhill section will require less effort (I think) than walking, but an uphill/incline will require more. I always felt that at the end of a day, this averages out. If you want more/higher activity, then focus on a course that leads to more uphill than downhill if possible.
One additional suggestion is to simply use the fitbit on a few "normal days", with no specific higher intensity activities. This will give you a sense of the distance/steps that are usually generated. From there you can decide what target to set.
Another point to consider is whether the Charge 3 has HR measurement and GPS - as I said I am not familiar with it, and my Flex 2 didn't have those, but I am sure they would give more "target opportunities" if they are available. Hope this helps a bit
