The fee can be deductible as an itemized medical expense (in excess of 7.5% of adjusted gross income if your mother is 65 or older) as long as entry into the facility is on the direction or suggestion of a doctor for a specific (not general) ailment and the facility provides treatment for the ailment or condition. The fee does not have to be allocated in this case between medical services and other costs.
A husband and wife who are required to live apart from each other by the terms of a decree of separate maintenance. Payments under the decree are deductible by the payor and taxable to the payee as alimony.