So the general premise of my character is that she has a high degree of regenerative power, which if she wants she can push onto someone else as long as she's focused on it. When she does this, she acts as a sort of battery to boost the power of her target as well.
Her regeneration also makes her a decent tank, so in a fire fight for example, she could out shoot a couple dozen people, soaking up shots until she's exhausted.
Sound reasonable?