Nose bleeds

Hi all,
Just wanted to gather info regarding experience with nose bleeds. Mom just finished second treatment and gets one week off before round 3. She had crazy nose bleeds on Thursday like a faucet. A total of 4 for the day ranging from 10-20 minutes. We called the doc and he said come on in for a blood test. Turned out her platelets took a dive. Not uncommon, we're told. Although not at critical levels, a significant drop. They want to see if her body will respond by making it's own platelets and don't think she will need a transfusion at this point.

Just a little bump on the road.......but scary nonetheless.

What else to look for?
Thanks
J