Purely just an opinion but the model for the mother needs some work. She's rather inferior to the other models in the game. The hair makes her look VERY unattractive. The face shape doesn't help either. The very angular features, along with the hair, make it look like she's a drug addict. The facial expressions in the first few days (I'm currently to the part where Sydney just showed up for the first time) make me want to avoid the mother. From the face down it's fine, but the face needs some work. I'd look at trying to soften her features some and give her a warmer expression. It makes her overall more attractive. I'm using the walkthrough and honestly, if it wasn't for the walkthrough I would have avoided the mother completely.
Other than that, so far I'm enjoying the game. Hopefully my comment doesn't come off as too negative. I meant it only as constructive criticism.