D.S.
http://www.labellabellymaternity.com/ - they have a little pregnancy spa, my massage therapist works there on the weekends.
If you would rather not go there, then I can send you my therapists name and email address and you can contact her, she may be willing to travel to your or your sisters place!
(She doesn't do *only* prenatal massage, she works on regular people as well, I highly recommend her)