I’ve been here. It’s a truly awful feeling to be so hung up on the pleasant feelings of an ongoing great conversation from an attractive woman who seems like she’s got it together. You have to realize that the key to breaking into determining the level of interest is by forcing action from her. Putting a date out on the calendar and having her commit. She either commits, counteroffers a date or she doesn’t commit. The first one is best since it implicitly creates space in her time for you without question. The second works but you weren’t the priority, but there could be a legitimate reason (don’t ask, she may offer), and the third is a good answer too because now you know.
The problem here OP is that you already know. So by talking to her, all you’re doing is creating a deeper bond in yourself to her that she is not reciprocating and the stress it’ll create will push into other facets of your life. I’m telling you from personal experience.
There are plenty of other ways to get good companionship and advice; friends, therapists, and then one day you’ll feel so good in your own skin you won’t look to your next woman to fill that role, because you’ll want it to be fun
In the meantime, if you don’t drop her this minute, you’re your own fault. If she texts you, just don’t answer. She doesn’t deserve any explanation no matter what kind of nonsensical rationale you come up with.
In summary, have some self esteem, asap. You’re better than this. You’re worth more. It’s over dude, HER LOSS.