I don't think it needs a time skip per say like 4-6 months like 1310 to 1311, as we would miss out on all the squee after all, but just let some days go by every few panels or something
Dora was cute with that hair. I miss that hair.
Whatever Hanners is doing about her problems, "hiding from" doesn't describe it.
The only item in that list Hannelore confronted in the moment was her mother.
Claire, on the other hand, has only run from one moment, and only been seen to plan for facing one issue. Claire seems to be unwilling to allow her stressors to lie, while Hanners generally prefers to approach hers only after careful planning.
That's in keeping with their different personalities, and the fact that Claire's anxiety isn't crippling, while Hannelore's is. Like I said, they can learn from each other.
Probably not a lot, as their fundamental issues are different. (Claire has situational anxiety. Hanners is best described by reading the DSM IV.) But Claire could use an example of not tackling even issue as soon as it is sighted, and Hanners could benefit from seeing that acting in the moment is okay. (Most of the cases where Hanners has jumped on a stressor right away have seen her overreact.)
Neither approach is the better choice. Claire's way works for Claire. Hanners's way works for Hanners. But having an example of another way probably won't hurt.
Anyway, the don't react to the same things, so I don't see how they could reinforce negative patterns in each other.