do you the beatiful plant called WELCOME PLANT / MONEY PLANT

my daughter and nephew playing in our small garden ; there are 2 welcome plant in the garden and others are succulent after an hour i hear my daughter cry so i went to the garden and i saw her hand's have welcome plant she says ouch ouch becos she put her hand's into her mouth so i don't no what to do and I run in the kitchen and get some sugar i told her to eat sugar after that it's OK thanks God i don't know about that plant but i need to trash it