Why Did Arianna Get So Upset Visiting Her Great-Grandparents?

Visit to my grandparents....

So yesterday I decided to take the kids to my grandparents to visit, they live in another town about 30 mins away. Well we are so busy alot so I haven't visited for about a month. Last time we were there Arianna was not walking yet but she crawled around just fine and played with the toys and stuff and let my grandma hold her. Well yesterday when we got there and walked in the door, I put her down thinking it will be fine but as soon as I did she started screaming and threw herself back on the floor. My grandma tried to hold her but she would not quit screaming, she screamed so bad to where she got the sniffles for like 30mins. I have not seen her this mad!!!!! I had to hold her the entire time and she would'nt even let her sisters hold her. Last time we went to her dr appt at 12 months, she would'nt let the dr. touch her or listen to her heart. I felt bad for my grandma because she wanted to hold her so bad but Arianna just would'nt have it. ?