Not enough info to know how to advise.
What did she have 5 years ago? What treatment did she get for it? What type of recurrence did she have (high grade, low grade, non-invasive, invasive)?
Where is she being seen?
Sorry about your sister's situation. With more info we may be able to give you some tips.
Mike
Age 54
10/31/06 dx CIS (TisG3) non-invasive (at 47)
9/19/08 TURB/TUIP dx Invasive T2G3
10/8/08 RC neobladder(at 49)
2/15/13 T4G3N3M1 distant metastases(at 53)
9/2013 finished chemo -cancer free again
1/2014 ct scan results....distant mets
2/2014 ct result...spread to liver, kidneys, and lymph...