How long should a beneficiary of a Trust expect to wait before hearing from the Attorney who is handling the paperwork for the Trust?

Forever. The attorney doesn't represent you. He / she represents the trustee of the trust. The attorney advises the trustee, and probably should advise the trustee to make disclosure to the beneficiaries (unless the trust instrument waives that duty for the trustee). However, the attorney doesn't control the trustee; he / she only advises the trustee. If you want information, you are going to have to ask for it. If you get no response in a reasonable about of time (say 10 days), you may have to demand it and possibly sue for an accounting.