Hey! It's been a bit! Glad to see you have been busy. I m glad you want to keep adding to Family Heir. It's so great. As for the recommendations you asked for.
1 mother's scene(s) could be something like her finding the cum on the table from the night before, leading her to find out about you and Ariana. Making her furious or confused depending on if you cum inside her or not. (Furious if you cum inside, because of a puddle of cum, and confused if she finds Arians dried cum spots on the table). (Furious) After that she would probably pull you in her chambers to scold you about the dangers of incest, however she is curious as to why Ariana was so willing to have sex with you. Could have options like explaing what a veratious lover you have become (fail) showing her your cock, which leads her to slap you and yell, (fail) Showing her the books about incest and explain thwt its a common enough practice (pass) she then reads through them and sends you away. Later in the night if you try and sleep she wakes you and has you meet her in her chambers where she pins you down and rides you, all the while berating you for sleeping with your sister first and that she is the queen so no one would second guess where her children come from
(Confused) mother is confused as to why there is stains on the table, she asks you about it but given the options to lie or tell the truth lie (fail) truth (pass) she is mortified with the thought of her kids having any incestuous contact. Mother then runs to her chambers where she tells you to go away if you nock on her door ending the encounter.
That way, if you succeed with breeding Ariana, one can set themselves up to breed mother too. But if they fail. Then they get nothing from either. Of course this is all my own suggestions and you can expand on or scrap the whole thing. Maybe there is something you can use in it, idk.
2.) As for updating, I think simply updating your page could help keep things consistent enough that players will keep coming back.