Are you saying re-applying after being denied overrides any previous decisions? That doesn't make sense to me as that would rendered useless their unappealable final decisions. What makes more sense is that decisions are made per applicant and not per application. However, if an applicant truly believes he/she qualifies for DACA and was denied deferred action because an error, a request to review final decision can be made.

https://my.uscis.gov/helpcenter/arti...y-daca-request

Now, what I feel it's happening here is that OP doesn't really qualify and just took her chances. Will not be surprised if denied apps go on the rise and star seeing more posts like this. Just saying.