Hi Renne!
It sounds like she was just checking you out. Women do that to each other lots. It means that your outfit and presentation were worth checking, that you looked like you were in her league so your clothes and shoes were worth scanning.
When your eyes met did you smile at her? It sounds like she didn't smile and that is a bit of an odd note. When eyes meet women almost always smile at each other. Maybe she found something in your outfit that she dispproved of, or maybe she just had some bug up her a--.
Offhand I'd say it was her problem, not yours.
Your practice of turning and averting eyes is not necessarily a good one. Deliberate lack of eye contact gives the appearance of some sort of guilt. You've got to project inner confidence. Eyes meet? Small "girl smile" and move on.
Hugs,
Persephone.
