...when Allie tells Hedy that she's sure she'll find someone else.
she said she'll find "someplace else"
Wishful thinking on OP part, I think.
Actually, no, she said she'll find "someone" after Hedy said she would be all alone. Ofcourse, this didn't imply they had sex whatsoever.
Lesbians can't have "sex". They can only prod and lick stuff. Gay fellas can still pull off seven minutes of heroic dick thrusting... even if it's into the poop pipe.
I guess you've never heard of a strap-on.
Don't remember anything implying that they did (but I did always wonder...).