Although she's not my biological aunt, my mom and my second aunt have a close relationship. In my heart, my second aunt is second only to my mom. After she called my mom yesterday, my mom said that the second aunt has very little confidence in yours and Third Brother's relationship.
After what happened to the Zhou family this time, the way you behaved has made the second aunt truly grateful. However, the fact that you and Third Brother always seem to have a barrier between you makes her feel that you don't have very deep feelings for him.
She's particularly worried that with Third Brother being away on a task for so long, something might change between you two. Third sister-in-law, I roughly know about the reasons why you and Third Brother came together.
Indeed, at first, Third Brother was a bit overbearing, but I have seen with my own eyes he has completely changed, and unless it's for love, I don't believe such change is possible."