She pays very close attention to those she cares about. She can always tell if something is wrong (sometimes even before they have recognized it themselves) and because she is so observant of their everyday habits and likes and dislikes she will often know exactly what they need to feel better, (even if they don’t ) and do everything in her power to give it to them.
Regarding being protective of Helen, she almost never has occasion or reason to chew someone out on Helen’s behalf (Helen is more than capable of verbally or physically destroying them herself lol) but she can tell when Helen is pushing herself too hard and will find ways to get her to relax. (Gail’s good at being patient and soothing.) When Helen’s temper flares up, or when she’s stressed or sad, Gail knows her favorite songs to play, or favorite food to make, or some ritual to make things feel normal when things are tense or upsetting.
…Of course, if for whatever reason one of her loved ones DID need some physical protection, Gail’s got that covered, too. I mean, she can drop kick pretty much anyone or anything into the sun, so it wouldn’t be a great idea to get on her bad side.