Well, it depends, if she retires on a high note like wins a 10th slam or if she makes a decision on her own terms and is happy with it, then it will be hard on me but I guess it will be easier to accept.
However if she retires because she's having injuries and her career ends on a low note, then I would really really be crushed.
My dream would be that she wins Wimbledon this year and ends her career in a stunning way. My nightmare is that she will continue having injuries and then she will simply be forced to leave and move on. Monica deserves to leave tennis on a high note and it's not too late, look at Jana, Steffi, Andre, etc. they all won slams when they were older.
And I will lose a lot of interest for tennis when she leaves, but I'm sure I'd still watch a little bit of tennis when it's on tv, but won't follow it on a daily or weekly bases like now.
But whatever happens, I'll be very proud of Monica and very thankful for everything she has done in tennis.
A true champion!