Would it be too difficult to just write single mothers?
There seem to be this trend where soon every word has to be shortened down to 2 or 3 letters.
The more I see of this the more I want to spell out the words. Unless it is an official short that one should know of, such as the NATO, the EU, the GOP etc.
SM is short for Sadomasochism. Social media. So much. Sergeant Major. Station Master etc.
Just write single mothers. At least in the headline.