I will put your mother on my prayer list. 

A couple questions. 

Which type of MD does your mother have?  The neuropathy and MD are probably running hand in hand like RA and Fibromyagial do.

I don't know what other treatments your mother has been on.  My first red flag is the COPD with Rituxan. 

Is her rheumie consulting with her GP for history of respiratory infections and what not or is the rheumatologist also treating all the other conditions she has? 

Rituxan is a big step to take for RA. I know it works for lymphoma (my mom was on it before it was released as an RA med), I am not sure it will help with the MD and other conditions.

Your mother is a very strong willed woman!!  Give her big hugs and kisses. And kudos to you for standing beside her.  I have been in your shoes while my mother battled her multitude of issues.  Please if you or your mother have reservations about the Rituxan or any of your mothers treatments, speak loudly about it with your doctors. 

Keep us posted, please.

Ronie

my mom died nov 8 2012.she had copd,RA,emphazema,and was on rituxan.everytime she had the iv she was taken to the ER with pneumonia the following day.all at once with no warning and weeks after taking an iv her breathing became labored and within hours she was dead.she told me that the rituxan was making her breathing worse with every treatment but the dr insisted she take it.if i were you,i would refuse the treatment before its too late.....carla,indiana