It sounds like proxy bidding, where she placed a higher bid than the minimum. If opening bid amount was $100, her first bid will post as $100 and remains there until another bidder bids. If you subsequently placed a $102 bid, you'd get an "outbid" notice and the next bid increment will be $103. Then if you try to bid $103, this will continue until you overbid her max.
To see if this is what's happening, click on the "bids" and click "Show automatic bids."
The following screeenshots are showing the bidding history for the same listing. As shown in the screenshots below, the first picture shows actual bids. The second picture shows "automatic bids." The grayed out bids are proxy bids, placed automatically when a prior bidder's higher proxy bid outbids a new bid.
ACTUAL BIDS
INCLUDES PROXY BIDS