Re: 20 year old daughter driving me nuts!
Seems to me that your daughter is crying out for attention. The anger and arrogant behavior strongly suggest that your 20 yr old is suffering... From what? I don't know, only she does. And unless you talk to her, calmly, about why she is acting this way, it will just continue to escalate. You are the parent still, even when she is 45. Major stresses? Job anxiety? Etc. There are endless possibilities why she is snappy with you. Find out and work together on a solution. Best of luck!