Fussy baby

My baby hates everyone. She will only go to me. She cries when sees others, she wint get off ofmy lap even. Its getting hard and I've been getting headaches. I love her but she us crying so much. I am at my grandmas house and their are other kids here and all day she sits in my lap and if anyone says even hi to her or makes eye contact ahe cries. I dont know what to di. She us 8 months old andshe has always been this way. I go to my grandmas house for a week every month. She wont go to my aunt either who she sees every weekend.