She's done just that now. Saying her shoulder can't handle longer singles matches anymore. But she also said she'll play in singles now and again as well, when she'll feel like it. So for example she'll try playing qualies in Auckland.
that's good news but witha plummetted ranking of 321 or something like that she won't be able to enter too many QD anyway ...
hopefully she still offers us some nice wins now and then and keeps enjoy playing , and still being competitive in doubles with maybe, hopefully, that elusive slam we're all waiting for for so long now
good luck to her anyway whatever her decision will be