High credit score/eviction & collection?

[Matt Sicignano]

I've got an interesting dilemma. Putting a co-tenant on the lease, ( they are sisters) and one has 840 score, but the other told me she had an eviction on the record, which was a roommate dispute 5 years ago. Pulled credit (Smart Move-thanks BiggerPockets!) and eviction didn't show up, but collection did, to the tune of $3800, which was disputed on the record and a new collection showed up ( which was medical, in December)  for $1200. The thing is, her score was 780, and SmartMove recommended acceptance. My question is, she said she was working with a credit repair service, and I'm wondering, with that high score and two collections-how she did it? I'm not even sure I would go with a credit repair company, since the score is so high! Do you think there is anything funky going on? I know "credit repair" places used to bombard the agencies with bogus disputes years ago and get some results but I thought that was over with. Does anyone think there is some funny business going on re: credit repair?