Maybe some good news for you!
I'v ebeen asking to my hieroglyphs teacher and this is what he told me:
The name of Abu Simbel appears in the inscriptions of the small temple with the generic name of Nubia "t3 sty"..the complete inscription sounds like this: His Majesty ordered to built a temple in "t3 sty". They have never built anything like that before!". However, in other sources the montain of Abu Simbel is called "the pure montain"- "djw w'b". It must be noted that both Gebel Barkal, in Sudan, and Gebel Ahmar, near Cairo, are indicated with the same name
Hope it can help!