first of all the script is called devnaagri. for both sanskrit and hindi.
mostly all the english names have to have something called ardha-chandrabindu
meaning half chandra bindu ( a matra)
like a in sandra is pronounced as a in ban, man, but mostly when translated
in hindi the a becomes more like ai in rain, main with a single matra
and even more funny with double matras of ए ऐ
सैन्ड्रा - sa indra
सेन्ड्रा is like sain(rain) dra
सँड्रा this is sandra with the dot removed only the semicircle should be there( ardha chandra bindu)
hope it helps