@donnatorrey , first one needs to satisfy another condition before deciding whether one or the other of you can claim the mortgage interest-----(1) you must be liable for the debt secured by the property for one to claim the mortgage interest. Thus you must be on the mortgage note AND (2) you must have paid the mortgage interest.
For property tax deduction again you must own the property ( i.e. be on the deed ) and must have paid the taxes.
Beyond that I absolutely agree with the information provided by @xmasbaby0
