I love MC Beaton's series about the constable. It is funny and entertaining. Debbie McComber is great too. Kat Martin, Susan Wittig Albert, are good reads. I love JA Jance but that would be a little less lite than you want. I also read all the Tony Hillerman stories. They are pretty good but might not be lite enough for post surgical read.
I am reading The Girl with the Dragon Tattoo right now. I had read this series before but I wanted to read it slowly (the last time I was on a waiting list and there were people behind me that wanted to read it) and thoughtfully because it is an engrossing story. This book is definitely NOT reading lite. Hope your hospital stay is short and that all is well when they bail you out.