Grandfather and granddaughter are taking a bubble bath together.
Granddaughter is around 3 or 4 years old. (Maybe a bit older...hard to tell.)
A family member takes a picture of the two of them in the bubble bath smiling happily.
The grandfather posts it to his Instagram account.
He is obviously (from the picture) proud to take the picture with his granddaughter.
There is nothing seemingly inappropriate in the picture as they are both pretty well covered with bubbles.