Feed her by stuffing her dinner into a Kong, a Kong Wobbler (only dry food), or an interactive food puzzle. Or hide her dinner in several small portions throughout the house and teach her to "hunt" for it - this will slow down her consumption and give her some mental stimulation, as well.
Sometimes, stress can be a factor. Perhaps she is stressed by being confined in the crate, or being far from you. In that case, a simple matter of a remedial crate-training or relocating her crate to closer proximity to you (into your bedroom, or next to your bed) to make her more comfortable could be part of the solution.