My DS (29 months) usually stays with his grandparents (80 miles away), for a weekend a couple of times a year. This time she asked to have him for a week. I agreed, knowing that I trust her & that she knows my parenting style & what DS is usually like (very active). However this stay she seems to have adopted my SIL's style of parenting which is, stick them in front of the iPad all day to keep them quiet. I really don't want my son doing this all week. How can I confront her about it without sounding bitchy? It's really bothering me.