Yepp, she was putting the family first, going a not really nice way for it but at least she had good intentions. If she goes the path indicated in the last update, handing the alpha status to Becca ( and with that the Co-Alpha to Fiona ) then this could go well. She still can be the counselor for all if needed.
She is looking not bad for her age, I am guessing late fifties at least, early sixties more likely, though that is not a reason to look old in a VN. Her model is made well, so not a wrinklefest and mood killer ( for those not into it. no judgment here .. )
Also she is core family and it would be a interesting experience to not only have a 3 generation household but also a 3 generation sleep/cuddle arrangement from time to time. Well at least for those filthy bunch that modded the original game....