going by tisha's interactions i think she'd be a pretty good parent, she's nice but still has the capability to be strict when people take her for granted
comparing her interactions with rodger and sprout shows she's not against helping people out when they put in some work of their own, but when it comes to people who should know better to keep their workspace clean that's where her patience begins to grow thin. the same with scraps, since an artist should keep their space organized and scraps said in the past she'd try to clean her room
astro's interaction is another good example, she gets a little upset at him but she's still open to clean his room, since he has a valid excuse in his hypersomnia
even with yatta, despite getting upset at her and even trying to get looey to help her, she still tells her not to eat candy off the floor because she doesn't want yatta to kill herself
tisha would be understanding if not a little peeved when her child makes a mess but would try to push them to clean up more after themselves as they grow older