I know with some precision when I read this story: while I was a student in the US, between September 75 and June 79. I read it in a collection, but there were so many in that library I cannot remember which. I think it was already quite old at that time.
This short story is about two women about to leave Earth for some colony. Where, I forgot: the Moon? Mars? Venus or Mercury? (Well, you and I know this is impossible, but it is fiction isn't it?) an asteroid? a space station? They are not going too far. There does not seem to be FTL in that story. I'll come back to that later.
One woman is married but I don't remember the marital status of the other one being mentioned.
The husband of the first one has been gone for some time already, but she did not follow him immediately. She was afraid, she did not want to leave Earth. He kept asking her to join him. At long last, she decided to go, and on her last evening on Earth she discusses with her friend, who is also coming, about their regrets and their hopes, the latter finally having won on the former.
One detail I remember: she showed her friend a picture, that her husband had sent her, of the house he wants her to join him living in. The friend says "But it is your house here!" She answers "The house is identical, yes, but look at the background! This is not Earth."
I don't remember precisely, but maybe the landscape was going "up", if it were an annular space station rotating round its axis for centrifugal force simulating gravity, or maybe just a very "non-terrestrial" landscape.
On that last evening she sends a vocal radio message to her husband to tell him she is coming. The answer, the same way, comes after a reasonable time. (The colony is certainly within the solar system, and not even too far in it. The asteroid belt at the very farthest, I would estimate, as I mentioned above.)
The answer message is mostly garbled, but just enough of it reaches her for her to understand her husband is eagerly waiting for her, and the story end on a note of hope which, IIRC, dissipates her last regrets.