we don't know if she's gonna be in Season 5...or if she's gonna play a big part of season 6 (we've read she'll be credited as a main cast member again but not sure at all) ..
whether or not this is for S5, depends on the scedule they work with ... if she says she'll be back next month..;than that means that she'll be onset in may (and isn't the filming of S5 sceduled for the ending of May?) ...