Product: Checking or savings account

My XXXX daughter and I are the beneficiaries of my late mother 's trust. I 'm the appointed agent of the trust. In reviewing her bank documentation I 've just found evidence of a sizable, forgotten CD in my mother 's name. It maturedXX/XX/XXXX. They claim to have no record of the account number at the branch, or at Bank of America Department of Unclaimed Property. It is n't on the California State Controller 's Office website. They told my Private Investigator the same thing. It 's in my mom 's name only so it will have to go through probate. This is something my legal team can handle. I have n't alerted them yet. 
As far as documentation is concerned I have the following : the original CD certificate, the sealed envelope I found it in, a certified copy of her death certificate, a notarized certificate of trust from when we brought the former agent of the trust to court to make her step down, a copy of the settlement agreement from the action which resulted in her appointing me as successor trustee, document of declination of the next successor trustee ( Bank of America ), and of course, her Social Security number. Basically everything that documents me as Agent of the Trust as well as the desired disposition of her holdings in the form of her Last Will and Testament. 
This is a lot of money to have lost track of. All I can say is that it was her money, and at the time she had moderate XXXX which I knew would require care and that she did n't have a XXXX policy. She had a ton of money in a non interest bearing checking account so we opened this account to boost her income, to tuck it away for the rainy day which I knew was coming. These facts coupled with my profound XXXX and XXXX at the time of her diagnosis, the cruelest thief of XXXX, come close to explaining it. Understandably the first thing I did when the holdings due me were transferred was to purchase XXXX coverage for my husband and myself. 
Bank of America gave my hired private investigator no more information than they gave me. Mother had opened the account on XX/XX/XXXX. The account matured on XX/XX/XXXX.  Of course the interest was reported to the Federal Government, taxed as is expected. The opening amount was {>= $1,000,000}. The posted interest rate was 2.71 %. They never sent notice of maturity. 
Id like to declare that Bank of Americas refusal to inform me of the disposition of the funds in this account, owned by an extremely vulnerable senior citizen with XXXX XXXX and a XXXX XXXX, XXXX and XXXX XXXX  survivor is highly suspicious. I dont believe them when they tell me that they cant find this account number in their system. They wont even give us a paper trail of where the money went, much less release it to her survivors, one of whom is a minor who as yet has no voice in either legal or financial matters. The former agent of the trust had inserted herself into my mothers confidence as she was in the throes of moderate XXXX XXXX. After Mom XXXX I had to bring her to court to make her step down due to inconsistent accounting, double dipping, unreasonable salary relative to her lack capacity and expertise and using her attorney to defend her position as trustee, all at the expense of my mothers trust. I cant even tell if she XX/XX/XXXX this account without our knowledge or if shed taken it through probate without telling us. 
Your help in this matter will be appreciated. 
Sincerely, XXXX