Here is a place in Maryland near Annapolis: http://www.aamentalhealth.org/warmline.html - it’s kind of like a 311 only for social services. Actually, the entire attached document has numbers to call depending on where she lives.
Respite care provides people with temporary relief from tasks associated with caregiving. I have pasted below information for Washington DC. Each state should have its own version of respite care.
Here’s a county list for Virginia: http://askunitedway.communityos.org/local/os040/posting_area/local/CentralPoints.htm. VA also has a program called Family Day Systems (FDS) whereby children are referred to available day care centers. Here’s a definition: http://www.autism-pdd.net/respite.html, http://www.autism-pdd.net/disability-resources.html#asssist.
And finally a phone number: http://www.goprincegeorgescounty.com/Government/AgencyIndex/Social_Services/child_care.asp?nivel=subfoldmenu(1,3) – this is actual Child Care Assistance, found by googling: respite care Washington DC.