my sister and i aren't very close. i think its been almost 2 years scince i've even messaged her on FB. over that for the last time i saw her. we didn't grow up together and have had very few sisterly moments. i feel i should invite her to the wedding but fear that she'll drive everyone nuts with her latest ailment. my sister is also is a hypocondriac. none of my relatives want to associate with her. she did drive to the city to see me when i was flown in for preterm labor with my son. and i don't want to cut ties especially because of my 2 nieces but i think it may be a disaster to invite her.