Why is my sister like this?

[Maariaaa899]

She is very smart but is very logical she doesn't have emotions and doesn't understand socializing, she loves work and duslikes sex or men or women.

[caring__1]

She may be on the autism spectrum (AKA Aspergers). Here is some information you can read: https://www.webmd.com/brain/autism/autism-spectrum-disorders

Understand, she won't change just because you want her to change. See if she's willing to be diagnosed and treated by a professional. You can start by sharing your concerns with her primary care physician.

[Wise4myage]

She sounds like a nerd.

[RuthlessAggression]

Autistic