Oh, Thor knew she wasn't the issue. He also knew that while he got along perfectly fine with both parents it was much more difficult for Loki. No matter what Thor tried to say in regards to their father Loki would never believe that there was love there. Of course, there was love there but...

He watches Loki stand, seeing the frustration. He stands so they were at level. He didn't want his brother to shut him out now of all times. They needed to communicate.

His big hand nudges Loki, trying to get him to look at him. He smiles, shaking his head.

Take time. No rush. If need can go ahead

Thor gives Loki's shoulder a small push before signing again.

No hiding though