K.
It's a phase, and it won't last forever. Even now, sometimes my 19-month old son has "mommy days" and "daddy days" where it just HAS to be one or the other of us. I suggest getting her used to 1-2 other adults who she sees a lot (like her father and maybe a daycare provider?) by having the three of you together so she can get used to that person. Also, have you verified that she actually cries hysterically when you're gone? Or is it just when you *leave*? (Ie does she stop in 3-5 minutes after you leave?) Sometimes kids cry when they know Mom is there and can't have her - that's different than crying every time you're gone.