Why does toddler get fussy with grandparents

Laura

Hi all, so we are staying with my in-laws for a week. The first few days, my 2-year-old does well playing with her grandparents and other family but as the week goes on, she gets more clingy to me and fussy with them and constantly tells them no. The weird thing is she did the same thing when we visited my family for the week. She was friendlier the first half of the week and then got progressively more fussy and clingy. I’ve kept her meals and sleep schedule as consistent as possible and we haven’t veered off too bad. Does anyone else experience this? Can anyone explain why this happens or what to do about it?