Can anyone out there give me advice on a cousin 5 yrs younger than me that when ever Im?

around her she messes with me telling me put my big girl panties on a move out of my parents house. shes been gone since she was 18 off and on. she also very outgoing goes to clubs dancing has a load of friends wears clothes having her showing dances on tables. me Im very shy and laid back don't have friends really have a hard time making them always had. Im 31 shes 26. she travels ive been nowhere, she goes to me always about my dressing your not going to get a boyfriend wearing that. I wear jeans and a simple t shirt nothing fancy. sneakers (reebok) shes got actual dress shoes or heels. shes embared me infront of her friends too about my housing situation my beer I drink she goes shell drink that brand if she was 16 trying to steal a drink. tell her friends im a homebody they dont need to know that. she made me cut my hair even embared me in front of 3 hair dressers. She says my hear looks like **** its medium lenghth and light brown I just wear it down no bangs. I had bangs for 29 yrs I turned 30 finally lost my bangs easier not having them. I tell her stop making fun of me shell go well its so EASY. I dont think shes good for me to be around I can be misarable by myself. shes embared me too much in front of ppl I dont even know. Its a cousin to that her & her immediate family I never liked growing up. they only call when they want my dad to fix something with the house or car. his wife too acts funny when u call & ask for my uncle too. she questions why u want to speak to him. Does any one think I should continue going places with my cousin who makes me feel like **** I already have a low self esteem as it is she doesnt help. Its my moms bros daughter.