How do I solve this?
Whenever my little sister is in the mirror, and I'll walk in, she'll leave almost instantly as if she doesn't wanna be in the same mirror as me or if I'm in it first, she'll avoid it even when she has to use it to do her hair, brush her teeth, etc., It really bothers me when she doesn't wanna weigh herself when I'm around. I'd encourage her to get on since she said she's been losing a few lbs, but comes up with these excuses as to why she won't get on. But when she's alone, she'll hop on. I just wanna know how to address this. Any advice is appreciated :]
Note: She's always been taller and little bigger than me.