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I was declined with less inquiries, score a little higher, card limits a little higher. Maybe if she could get those limits up, no more inquires for awhile she'll see some pre-quals. It certainly doesn't hurt but helps to wait. Good luck to you both.
Edit to add: Don't go by my Exp score now, it's taken a beating over the past few months. But I believe my score was around 730 when I was declined.
Waiting sounds prudent. When do they drop off and how are they distributed across the agencies?
Ah, was wondering if you had maybe much less in one.