02 Honda civic LX 1.7-1.8 not sure. oil is leaking into coolant/radiator

so my wifes car had ran into some issues about 4 days ago when her car quit on her while driving from our sons school. she said that the oil light had came on moments before the car gave out and shut off while doing 70 on the highway. then, she told me that there was smoke coming from the valve cover, manifold, and oil cap. Getting the vehicle home was a straight challenge. So after getting the honda home, being both my wife and myself are both very mechanically savvy for we work on not only our own vehicles but other as well, this problem stumped us… our initial thought was that engine oil had some how gotten threw the seals and valve cover gasket into the cylinders.. well after removing the valve cover we noticed that all four seals we bad, and valve cover gasket was as well. so we replaced them cleaned everything and put it all back together. everything seemed well when we brought the civic out for a few mile test drive. Hours later, we attempted to run to the store down the highway about 7-10 miles down the road and sure enough the car took another big CRAP exhibiting the SAME symptoms as i explained above. well getting the car home was yet again a big hassle sop we stop at a gas station not even a mile from home because THIS TIME THE CAR WAS OVERHEATING. We popped the hood and noticed that the hose from the reservoir to the radiator wasnt even attached and who knows for how long…. lol i know right? stupid.. so we ended up buying coolant 50/50 mixed and went to put in the radiator directly and BAM!! i noticed the was engine oil IN THE DAMN RADIATOR!!!! i have not dealt with anything like this before for i mainly work on GM american engines.. and i need some serious help. does anyone have any answers for me??????
you can either post an answer here or my email that should be listed somewhere here think.
PLEASE HELP US!!! THANK YOU!