But no one questioned the juice. What juice are you using?
Nobody questioned that it is possible she got a "lot" of bad coils. It happens, not a lot, but it does, then you think you're doing something wrong.
adriane7, at 2.2ohms turning battery voltage to 4.0, you're vaping at about 7 watts.
For me, that is high, hot. I like 6 watts myself
That will be different for everybody though.
Once you toast/burn those coils, they will never taste right again, so you need to start over. Fresh coils, and then let the juice sit in the clearo for a while.
Are you using the SAME clearo each time, with different coils? There could be a defect in the bottom part of that clearomizer, the base where you screw those coils in. Try to eliminate as many problems as possible. Start with new coils and different juice.
But I think you just need to let the juice sit in there until it reaches/primes the coils and wick, before you take a vape.
And as DaveOno said, it could just be your juice that is too harsh for you.