The thing that messed with me was this girl seemed to really like me. She seemed just as excited as me to hang out. As soon as I'd call or text she'd be down. Also the way she looked at me too seemed like she really liked me which made no sense when she ghosted
If she gave you that look of desire that you are claiming and you didn't see do anything then she may have gotten scared and autorejected you. Girls are highly emotional so even though she really likes you she may reject you due to their insecurities. You said she was average looking, if you are above average looking or are really good looking then she may have gotten scared that you were to good for her thus she rejected you by ghosting. This actually happens a lot with attractive men and it will mess with you initially because you automatically assume you did something wrong.
It's going to suck because you genuinely liked her but you cannot do anything but move on. If she comes around and reaches keep doing what you were doing and taking her on dates. Whatever you do, don't chase her.