If learning to wash her hands means a messy bathroom for a few days, or if getting dressed on her own means she spends a week running around in an old pink turtleneck, a bright red skirt, blue jeans, and flip flops, go with the flow.
The bathroom is likely to be the last room I do anything cosmetic with so the embossed vinyl wallpaper in shades of peach and 80s grey and pink tiles are going to be sticking around for a while.