I used to know a girl named Ysela who pronounced her name the same way as the Isela you encountered. She was also Mexican American.
Isela
GiovannaIsela
GiannaIsela
VictoriaIsela
VittoriaIsela
ChristineIsela
FrancescaIsela
ReneeIsela
RubyIsela
ClaireIsela
PearlIsela
Gwendolyn /
GwendolenIsela
PatriceIsela
GenevieveIsela
GuinevereIsela
VerityIsela
PatienceIsela
ConstanceIsela
ConstanzaIsela
JessamineIsela
VioletIsela
WrenIsela
JoyIsela
JosephineIsela
JudithIsela
VeronicaIsela
VanessaIsela
MiriamIsela
TeresaIsela
JaneIsela
CarmenIsela
MarinaIsela
CarinaIsela
CorinaIsela
CorinneIsela
RosemaryIsela
HeatherIsela
ChloeIsela
MarenIsela
FernIsela
BiancaIsela
RachelIsela
JacquelineIsela
MartinaIsela
ChiaraIsela
Ginevra