@Bonaventurian,
bona, i do have one practical suggestion. dont make her overweight and say most old women are -it is usually more the reverse. an overweight person usually has health problems that shorten their life, and it would be more realistic and believable to make her 'thin and wizened'. also, fewer people have teeth at the age of 80, they are left in a cup at night. but i would just not mention her teeth if i were you.
i really think you have a way with words-and if you follow some of the good suggestions that were given, you could make a good story that you could use elsewhere in your own campaign. it could be really poignant.
as a matter of fact, my own grandmother had a number of coathanger abortions during the depression years because they didnt have enough money to raise any more children. her husband was a bootlegger and drank more than he sold, and i doubt if she had any options as far as contraception goes. but she did often remark in later life from time to time that she emembered the babies-one was big enough that she saw it was a girl.
and another issue i will tell you-it is about a woman i met here who had an abortion. it is a common practice here to abort female children. she later found out there was a mixup and her child was not a female-she had five daughters already by the way and no son. she was normally ok, but sometimes she would talk about it and tell me how he was a perfect looking little boy, they brought him to show her lying in a little tray. and she would cry...i remember one time i asked her 'would it have been ok if it was a girl?' and then she said 'no'...but she never resolved the issue in her head or her heart.
so there are a lot of story themes you could use here...more subtle ones.