Camilla when William becomes King

When William becomes King, will Camilla be called the Queen Mother, since William probably does not consider her to be his mother?
It looks to me like maybe Queen Dowager could be an alternative that would recognize her as a former queen, without the motherhood baggage? I am looking forward to the UK Sweeps waking up and weighing in.
It appears that a lot of people don't realize my question is not about what Camilla will be called when Charles is king. It is about what she will be called when she is a widow. Elizabeth's mother was called the Queen Mother.