As we're just listing potential influences and similarities, I see her as similar to:
Empress Matilda
- Sister of the successor to the throne (Viserys/William Adelin)
- Moved abroad when just a child
- Became ruler overseas (Mereen and Khaleesi/German Queen and Queen of Italy)
- Married a foreign ruler as a child who dies while she was still young (Khal Drogo/Henry V HRE)
- Later married another foreign ruler to strengthen her position (Hizdahr zo Loraq/Geoffrey V, Count of Anjou)
- Both are described as being beautiful
Also in both cases there was a rebellion started by a nobleman named Robert. However in aSoIaF it was against the Targaryens, whereas Robert of Gloucester rebelled against King Stephen, so not a direct comparison and most likely a coincidence even if Matilda was an inspiration for Dany.