Another scenario might be she is looking straight at the clock, whiteboard, or friends to distract herself and will look all directions except at you. Hugs are a friendly, affectionate way of getting closer to you and touching you without it necessarily compromising her stealthy flirting skills. See if she teases you. If she teases you lightly and in a friendly way not maliciously or with ill-intentthen that may be her flirting style. It's not always easy to tell whether or not a girl has a crush on you.
Playful and flirty rants about how you would both be a nice couple may be her way of telling you that she is just waiting to be asked out.
Attraction in Women: Signs That a Girl Likes You or Has a Crush on You
But if you really trust one of her friends and don't think she'll report back to her friend, then go ahead and ask if the girl has a crush on you. In the past, you used to be able to get her take on your love life. You can try flirting with her again after a couple of weeks. If she is interested she might gaze into your eyes with dilated pupils and fluttering eyelashes. In the past, you were more likely to hang out in a group setting. However, if she makes eye contact with you for an extended period of time without talking, or if she looks at you and breaks away the minute you look back at her, she may be intrigued by you.