I have added a link. All I am asking is what does this sound like, my gr grandmother father or more likely stepfather. I know it's secondary?

Have you looked at Amparo's birth record?

https://familysearch.org/ark:/61903/3:1:9Q97-YSDP-...

It says (in summary, with my limited handle on Spanish):

Natividad Garcia, age 25, single, occupation domestic, native of Fajardo neighborhood in (can't read), living in las Cabezas, gave birth to a girl, color white, born at the house of the declarant [Esteban Guzman] on 5 January 1901. Father not named. Child is the maternal granddaughter of Sandalio Garcia of Fajardo (deceased) and Matilde Nieves of Fajardo (deceased). Baby is named Amparo.

Here is the birth record for Amparo's older sister, Maria Victoriana, born 30 Mar 1898, mother Natividad Garcia of las Cabezas, age 30, single, domestic. No father named. Grandparents are Sandalio Garcia and Matilda Nieves, both deceased. https://familysearch.org/ark:/61903/3:1:9Q97-YSDG-...

The 1920 census, where Natividad is listed as Garcia y Nieves and her children are all Garcia y Torres, is confusing. Garcia y Torres would indicate that the father's surname is Garcia and the mother's is Torres. But we know that the mother's surname is Garcia. It could be a mistake, and the names were just flip-flopped. Or it could be a way of indicating that the parents weren't married (I haven't heard of that being done, but who knows). Or Torres could be the name of some man that Natividad was living with at some point. Lots of what ifs, but we can't know anything for sure with these records.

Perhaps Natividad appealed to the court at some point, asking for some kind of support from her children's father(s). This wouldn't be online; you'd have to visit Puerto Rico or write a letter requesting a search. It's a long shot, and it would take some research to find out where to write... but as they say, nothing ventured, nothing gained.

Another option is to look for baptismal records for Natividad's children. Baptism records *sometimes* include the father's name for illegitimate children. It's rare, but always worth checking. Again, you'd have to figure out which church they may have been baptized at, and write to church or achives where the records are kept.

Same as you asked every other time you have asked online trees are guesswork, find the real records the prove ancestry as until you do all you are doing is copying and pasting and building a lets pretend tree

Do real research and forget about the family trees on Ancestry.Com or any website. They are not records at all.