Hey there,
It's hard to tell whether an 8-beat-long run of PVCs is benign or not. It depends on your cardiac history, so only your doctor can tell for sure. But, I personally have had runs of constant PVCs - hundreds of them in a row - so it may not necessarily be abnormal.
How's that for a vague answer? Hope everything goes okay and things with your mom are a little easier on you!