We had a girl start at the company late August. Last week Monday she asked if she could leave early, and was given permission. That was the last we saw of her.
She apparently spoke to someone the next day, said she was sick or something, but has not contacted the company since. Company has not contacted her.
What is the correct way forward here? Her work was shoddy at best and she was likely on course to be let go anyway - she has not signed any contract.

I'm not sure if/how it factors in, but a few weeks in she informed us she'd just found out she was pregnant, and did take a few sick days in the following weeks.