In my opinion, it's for the best that she takes some time off the court to get 100% physically ready this time. there is no rush
In my native language they say:
A L' E' INUTIL INSEGNA' AL MUS, SI PIART TIMP E IN PLUI SI INFASTIDIS LA BESTIE!!
(translated) There is no gain in teaching the donkey, you waste your time and annoy the beast
You don't think she'll be back this year? She seemed almost ready to compete when the heart problem reared its ugly head again. So I would think she might be back by two or three months after the last operation, based on what happened last time.