Blood Drive Painwheel is the definition of a glass canon, even amongst all the Painwheels themselves.
Inflicting Heavy bleeds on enemies, but also getting one stack of bleed on yourself as well, but also gaining a stack of enrage as well.
The Heavy Bleed damage is very useful when fighting tankier enemies and is nice for steady DPS in the background, but where she really shines is gaining multiple stacks of enrage during a combo and then finishing enemies with a well buffed special or BB at the end of it.
However, i'm don't want to understate how much of a glass canon she is. For every stack of enrage you get, you will also gain a stack of bleed.
So by the time you may have killed a tanky enemy, your blood drive may already have bled herself down to 50% HP as well.
If you play your cards well and avoid letting the enemy hit you, blood drive can be a real monster.
High risk, high reward.