She wasn't really in the same metier as Nadiuska, Adriana Vega, Helga Liné or Eva Lyberten. They did lots of softcore; Solar appeared in such films, but in character roles.
In Los violadores del amanecer, by the way, Solar is dubbed by a Spanish actress, but Solar is recognisable as the dubbed voice of the black actress (Jennifer James) who appears towards the end. These switch-arounds are common in Spanish cinema at the time.
Iquino's Los violadores, by the way, is a delirious Spanish rape-and-retribution film featuring, among other things, a doctor that smokes and a Catholic priest that condones abortion. The news of Solar's death was broken in a Spanish forum by Ricard Reguant, who appears in that film as an actor (he's the young bearded cop) and dubs the voice of one of the thugs.