In the date with Mom if you choose the pasta, she mentions
. Imagine she'll be showing up at some point, then. Also with how aggressive Mom is sexually, wouldn't be surprising to find out that Mom had relations with her, at that time. Also in the dinner if MC says he's not looking for a girlfriend, Mom suggests considering the daughters as potential girlfriends. Supposedly this is a joke, but with the
, she may be doing something to orchestrate some of these connections to family. Just some thoughts.
Have to find out from Dad's office when his next business trip is. After that, talk to Mom and buy Red Wine.
Important Note: After the Mom weekend event
she disappears. If you like having her be around and come to your room at night, be sure to save before the weekend event, as she's unavailable afterwards.