<human>: Can you condense the text into three sentences or less?

I have been worried about my mom for about a year now. I have been living far away from home, and each time I see her, she seems to be not as "with it" as she used to be. My dad [62M] and sister [30F] have both noticed, a bit, but they live nearby and see her day-to-day so it is not as obvious. 

Some of the signs I've noticed: calling my boyfriend my ex-boyfriend's name about 10 times in the span of two days. Getting frustrated at minor things. Confusing common words (said she was going to the vet instead of the eye doctor after we had a conversation about our family cat). She is retiring early because she said work has gotten too difficult. She calculated the west coast/ east coast time change wrong three times in the span of about two days. My dad tells me she is less social than she used to be. She interrupts in conversations more frequently than she used to. She seems to, in my opinion, seek approval almost as a child does to a parent.

All of these changes are subtle, but they are very noticeable to me, especially since she is only 58 years old. I work with people older than her who appear to be more with it. I should also mention that she has been obese for my entire life and constantly says she is trying to lose weight, but never does (I read that there is a correlation between obesity and Alzheimer's). 

I guess my questions are for anyone who has had someone close to them develop Alzheimer's, do these sounds like the very early stages? Also, how do I go about handling this? Do I bring it up to her? My dad and sister fear that she will know we have been talking about her when she isn't around and that would upset her.
<bot>: I'm worried that my mother has early signs of Alzheimer's. Dad and sister are a bit worried as well, not sure how to handle it