Re: Kind of quiet here...so I just want an opinion..
My Dad also preceded my mother in death by 30 years. By the end of her life she had entirely forgotten him. She did remember her mother, and was looking forward to seeing her again.
Your Mom may be wishing to see her own Mom, but she also knows that a dearly loved person comes and looks after her often and that is you - but she uses the word Mom to describe the relationship between the two of you.
At other tmes she may know that you are her daughter. It always seemed to me to depend on the time of day - earlier in the day Mom was sharper. As the day wore on she got more and more confused.
Happy Fourth of July for those in the USA.
Happy Canada Day (a little late) for those in Canada.