OMG! That's so upsetting when stuff is missed, that in hindsight, others pick up. Specially the liver spot!
Perhaps a letter to the Medical Association/Hospital she works from would be in order, expressing your disappointment - just so it is on record! How old is your original 'onc'? Would they be 'up to date' with the latest treatments/findings?
You may not be the only one that she has mucked up with treatment.
FFS - the blood markers are a flag ..... and should have been acted upon immediately - that's why you are having them. grr
As @primek says, maybe approach them on compassionate grounds re your new drug? And as @Zoffiel mentioned - contacting the Oncology Society as well.
All the best - big hugs coming your way xxxx