Please work quickly with her doctor to get a proper diagnosis. She seems to have a biliary issue and this needs to be resolved asap. Whether it is a stone or other issue, only her doctors will be able to determine - and imaging will likely be required as well.
But if her bile cannot exit her liver properly, then this is a poison to her liver tissue, and can cause long term damage. Given her bilirubin level of 5.9 along with elevated ALP, her bile flow out of the liver is being impeded. At a bilirubin level of 2.5 or higher, this will cause jaundice, so at a level of 5.9, yes, she will be yellow.
Take care and let us know how she is doing.