Activity Notifications

I have had a watch since the beginning of the year. I bought one for my wife last week and she has started to get used to the activity side of it. However whenever there is a congratulatory notification regarding her activity the notification starts with my name (William) and not her's (Anne). Her iCloud account is a parent/guardian in my iCloud account and she does use my iTunes account. Is this the reason or is it something else and how do I get the watch to use her name and not mine

 

Yes it does