Why Ra doesn't make contact with Carla and Jim after Don's suicide??

[Patrick]

...It is also possible that those of Ra felt their message was received and they did what they could in response to the "brothers and sisters of sorrow's" call, and they had no more to add to their message of the Law of One.

I believe the desire for communication is still present, Ra being part of the Q'uo principle. They can no longer communicate directly, but the wish is still there in my opinion.

But I believe we were lucky to even have such a long stretch with the Ra material in the first place.

Although, as the 4D instreaming continues to increase, opportunities for such communication might increase with time as well.