So now you have two slip mats - always come in handy Umpire.
Like you we are getting older now ( only our bodies though - not in our heads
)
My hubby slipped getting 'out' of the bath - no slip mat as they are generally associated with showering.
He fell so hard he loosened the metal Grab Rail on the bath - yes he injured himself but not as drastic as your daughter did.
He was lucky. we had to have the grab rail repaired !!
Hoping your daughter has a speedy recovery with no lasting effects x