What you are talking about here is using available information to make a decision that you have to make. You park, you need to get to your car so you take what is known and make the best decision with what information is available.
Using your scenario and comparing it to what we have here, it would be like parking, then making a judgement on the income, profession or intent of the people in the parking lot based on how they are dressed.
They differ immensely.
You don't have to judge this woman to make any decision. It doesn't impact you, but it doesn't stop you.
Like I said, Making a judgement and assumptions to make decision are required in our daily life. Making them about other people is not.