Jalabuhn

My 2 kids, husband and myself all came back positive rapid strep. However they cultured it anyways...and NONE of them grew out over night!!!??? Any one have ANY ideas of why or how? We have had MULTIPLE positive streps over the past year. My 6 year old is actually getting her tonsils out in a month because of the streps. However, now I am questioning if she really should have the tonsils out or if we could all be suffering from staph or something that reacts to the strep test...? Help?!