Gaia

104 isn't bad... you could take her to a lake or water park but that was probably already suggested. If outdoors... that is.. and make sure she has sun screen and I would get one of those spray mist fans as well as making sure there is plenty of water available to drink. IF you did anything outside that is.. lol. Inside.. well aside from what everyone else listed... and they may have listed this already but.....

Board games such as Candy land
Do a puzzle together
Watch a movie
This may be a bit messy but if you have a bubble machine or well something you can blow bubbles with.. thats fun to do indoors as well.
You can have her help you bake cookies or something along those lines.
Do some arts and craft projects
Color pictures together


Those are just a few that comes to mind that I've done with my kids.. lol

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