What would you do?

A female colleague of mine caught multiple times staring at me at randomly, and starts conversation at night using WhatsApp.

She also comes to my desk randomly for trivial suggestions and help. She knows I am married and have kids. Her behaviour doesn’t look appropriate to me.

She even sent her picture once asking if she looking cute. Normally I wouldn’t have minded all these but she kept sending messages at night and it causes some issues with my family.

What would you do in this case?