The real problem is not that the mother have always and only the dressing gown. The problem is that after the sex scene she stay permanetly in her bedroom! Ok you can talk with her and say sex in bathroom or sex on the washing machine or in her room. But i think was much better if she moved every day in a different room. Like for example:
In the morning kitchen (while she wearing dressing gown), in the afternoon... sunbathing in the pool (with some sexy swimsuit). In the evening livining room (wearing some normal clothes) and at the night in her bedroom (with some sexy lingery XD). Ofc speaking with her you have all the option, like sex in her room or in another room.
The same thing with sister and aunt. So exciting thinking to fuck sister in Mc room or in the pool XD i wanna cum in her in all palace, same with aunt and specially with the mother i really like MC mother XD if the autor put pregnant, i surelly impregnate all the family member XD