So if there is a will then I can't do an affidavit, but what about a summary or Simplified Probate instead of an informal.

I'm named executor. There is no real estate property and just some personal assets we believe would total less than 10,000. There is one bank account that the banker could not find a signature for, even though for years there has been a POD on the account. There is only 1200 in the account. I know I will also have to do her income taxes for 2020 and there may be a small refund, not sure how much because I haven't done them yet to know., but no more that 4,000 for sure. So would a summary or Simplified Probate be used?