Sharapova's tweet during the US Open women finals

It has been 3 weeks now since Serena Williams silenced Victoria Screamarenka during the 2013 US Open Finals.  It was such a monumentous win for Serena on so many levels.  Many WTA stars and important figures tweeted something about the finals.  All of the tweets I saw mentioned Serena and Vika at some form.  Many congratulated Serena on the win.  But not the case on the tweet of Maria Shriekapova.  This is her tweet:  "Watching the US Open finals.  So many memories.  Can't wait to be back there next year."  I may be reading too much into this but I can detect the thinly veiled jealousy Maria has for Vika and specially Serena.  All Maria can mention is a reference to her US Open win many years ago and a hint that she will be in the finals again.  No congratulations on Serena or praise for the great match.  Both players has very good record against Maria.  No wonder she would be jealous of them.  I feel Maria still thinks she is better than Vika or Serena.  She may think so but the record/stats does not agree.  Silly Maria...  She should just focus on her stupid candy and shut up in court.