How old is your sister? And why do you keep watching such an occurrence instead of intervening right away?! That said I'm glad that you were able to save her.
From the way its worded I assume they werent paying enough attention to the situation (Maybe distracted) and only later in realised the full extent of what was unfolding
seriel is correct, that's pretty much what happened. and my sister is about five years old. she should know better, but well i had to do what i had to do. i honestly thought it was like a sugar cube or something, because she DOES like those... maybe that's what SHE thought it was? idk man