Arielle is still crying since Tania left. The woman sat on her faithful husband's lap waiting. It took a long time for Arielle to calm down.
Because Tania is the closest figure to Arielle. And after Tania's departure back to Nieverdell, Arielle will not know the latest news from Tania again if they don't send letters to each other. Arielle couldn't examine Tania with her own eyes neither.
But what saddens Arielle the most is that no one will hear all of her outpourings. Ronan would of course have listened to all of Arielle's complaints, but pouring out her heart to Tania was much more reassuring. Because sometimes she was still afraid to bother Ronan with her own trivial matters.
Ronan already has a big responsibility on his shoulder. Arielle had promised to be present to lighten the burden but if Arielle came with the problem again then it would be the same as Airelle not lightening Ronan's burden at all.