You weave in a lot for the reader to think about- and want to know more about - e.g.

Part of Lo suggested giving up, letting nature play out, assuring her she’d done as much as any reasonable person would. It was a part she’d never listened to, not when her marriage had taken a wobble, not when she’d got the hospital report, she wouldn’t start now.

And "sixteen stolen months" later she's alive and fighting.
Not just for herself now, but for the little fighter who's so tiny and weak. Rescuing an animal can be the best treatment for convalescents, soldiers with PTSD, the lonely - anyone!