Hi
Thanks for posting your query.
Age and duration of her present problem forgetfulness not mentioned.
I appreciate your concern for your mother, she really needs to be looked after a daughter like you.
Methadone is used to control her pain and its used not associated with forgetfulness.
Seroquel is an
atypical antipsychotic used to treat her psychiatric symptoms.
Savella is antidepressant used in the treatment of
fibromyalgia and less likely to be associated with impaired memory.
In view of the above explanation, it is apparent that your mother might be having some sort of age related loss of memory which could have been increased with the use of Seroquel.
Hence, you are advised to taken an opinion from the treating pscychiatrist to find out the possibility and use an alternate medication for her psychiatric problems.
Hope these suggestions could be useful in getting her treated for forgetfulness.
Wishing your mother a very good health.