Was she eating f/t before you got her? If she wasn't, she may not convert right away for you.
Leave the hide on her, pre-scent (leave thawed rodent on top of her enclosure for 15 to 30 minutes). When her head comes out of the hide like she's interested and testing the air, you can offer. Heat up the head of the rodent with a hair dryer, or touch the nose on a heat lamp for 10 seconds.
Put rodent on tongs, and offer to her (you may have to move the rodent to appear alive).
If she refuses, do not offer again for a full week. The common mistake new keepers make is they try multiple times in the same week, which really puts the snake more off feed.