She looks like she might make a competent nurse.
What's the meaning of "might" here? Does it have a certain meaning or it just plays a grammatical role?
The fuller text is here:
The writer herself is rather austere looking. Dark hair pulled back from her face in a tight ponytail. Strong bones. No-nonsense skirt and sweater, equally no-nonsense eyeglasses. She looks like she might make a competent nurse. The only flourish is a pretty scarf around her neck. Not unattractive but getting on. Maybe pushing forty.