As far as I know, they don't have anything like that here.....which is a shame!! The only "birthday" party thing they do is the Pat E. Cake party at the Plaza Inn. Here's a link to pics & my review:
http://disboards.com/showthread.php?t=2088835&page=13 POST #195
In a nutshell.......don't waste your money for this!!
As for other ideas:
You could get a PS for one the many great restaurants, let Disney Dining know that you're celebrating your mom's birthday. You can pre-order a special cake for her to be brought out after your meal. Disney Dining's phone # is 714-781-3463. They can also give you ideas for other little extras you could suprirse her with.
If you like a quieter meal with great ambiance I'd suggest the Blue Bayou. This meal is spendy but worth it.
If you (and your mom) like the characters....go to one of the 5 character meals. All 5 do breakfast, but only Goofy's Kitchen & Ariel's Grotto offer lunch & dinner.
If you want fun, take her to the Rainforest Cafe (now you wouldn't be able to get the Disney Dining's help in this restaurant).
There are a ton of restaurants in DL, DCA & DTD that would make for a fun birthday meal.
Hope you figure out what fits your families likes & have a wonderful birthday party!!!!