Problems using Devanagari-Qwerty keyboard in Mountain Lion

I have all the discussions about Devanagari-Qwerty and have looked at and used all the websites that give instructions. But most do not apply to a Mac using 10.8.3. Nor do I get any answers from the people at Apple-Care when I phone them. My current questions are the following:

1. What is the exact default font that is attached to the Devanagari-Qwerty keyboard in Mountain Lion? It is definitely NOT Devanagari Sangam MN, and it is NOT Devanagari MT. I cannot even use Devanagari MT in Mountain Lion on any of my programs, such as Microsoft Word or Adobe InDesign.

2. I have spent the last few hours trying to figure out how to type one of the Sanskrit vowels that transliterates as "kree" or "kreem: ऋ़ं According to all the instructions I have read, theoretically this should work by typing option+r, shift+f, shift+m. But this does not work In Microsoft Word or InDesign, it just types a halant after the "kr"

3. I cannot figure out how to turn on or use any advanced typography characters in any Sanskrit font with Mountain Lion. The instructions I have read do not apply to Mountain Lion.

I have been wasting many hours! Please help me!