It could work if you ingest enough paracetamol to die from and not too much to vomit.. But you have to be prepared for a long path of suffering (some days with horrible physical and psychological symptoms). PPH says the paracetamol-method is a No-Go, it's not recommendend.
DON'T !!
Do you have access to the Peaceful-pill-handbook. There are several reliable methods and even regiments described. It's quite helpful and you'll find a better method.

If have the PPH as pdf... PM me and i'll send it to you.
That's probably the reason why she wants to combine it with alcohol. Because high amounts of paracetamol destroys/damages the liver and subsequently lee to death, when liver collapses. Alcohol also damages the liver - the combination is said to increase the damagage and make death easier.
BUT as I've wrote before,
DON'T. The death is horrible and the agony long-lasting (days...).