Help dealing with my mothers estate as she has passed away

I am in need of help dealing with my mother's estate, now that she has passed away. Specifically, I need legal advice and guidance, as I have a partial list of her assets, but need help identifying any additional ones she may have had. Ultimately, I am looking for assistance with just identifying her assets, and not with probate or asset distribution. I need someone with the experience and knowledge to help in this delicate situation, and who can provide me with the support I need emotionally. (I need help closing her accounts and finalising any thing that needs to be done with her estate, Also with the transfer of her car and other properties or accounts.) Thank you.