Based on my, admittedly limited, experience it is best not to jostle the prey around too much even if they drop it. Both my BP's have transitioned to F/T but there was some awkwardness with the first. Where my female is a deadshot and takes the head every time even if I present it weird, Fluffy is clumsy.

Evidence, and yes he did eat it without intervention:



I have found that if I shuffle the rat around and reposition or reoffer it after he has had a derp he is a bunch slower to revisit it and start eating it. Early on I reoffered him one that he'd dropped because a goofy grip and it took over 30 mins of him patrolling his cage before he came back to it.

When Fluff is hungry he is at the top of the tank waiting, and I have worried in the past that he'll come out, in that case I just present him the nose of the rodent with out any extra ado and he'll usually be on it in a second. If they go to the trouble of wrapping and striking they will in all eat in all likelihood even if they let go to make an adjustment. I suspect that the extra intervention is probably what put your girl off her feed.

Going forward, thaw the rat in the room she's in. Offer her the rat on the tongs but don't do a ton of jiggling just put it close to her face(don't assault her with it) or in front of the opening of her hide if she is in it. Be patient. If she wraps and strikes let her be even if she lets it go. You can place her back in her tub once she's wrapped if she has come flying out. If you really think size is an issue, try a rat fuzzy or crawler, but my 114 gram female takes rat pups with out issue.

Most of my early feeding issues were caused by my own worry and hovering. I wouldn't worry about scenting or going back to mice at this point. Give her some time, offer again, keep it simple.