Try out sites like Playfirst or Bigfishgames they do more simple laid back games that are often similar to sim games.
As for more console games rather than PC I'd suggest try things like:
Kingdom for Kelflings - Very sim-esque I think there' another one called world of kelflings too
The Undergarden - nice and relaxing and very basic controls and good tutorial
Stacking - Very fun little game and combat is very minor so can be good for neophytes
The Maw - It's a bit kiddy-looking but it's cute and fun
The Sly Cooper Series is a lot of fun too and again is easy to learn.
Paper Mario Thousand Year Door is great fun and very forgiving.
Ghost Trick is incredibly deep and there's no combat to learn and deal with.
The other stuff suggested sounds good too so I haven't bothered to repeat them. I tried to throw out random games as I don't know what she likes besides the sims and rift but found it confusing to learn (I did too)
As for more console games rather than PC I'd suggest try things like:
Kingdom for Kelflings - Very sim-esque I think there' another one called world of kelflings too
The Undergarden - nice and relaxing and very basic controls and good tutorial
Stacking - Very fun little game and combat is very minor so can be good for neophytes
The Maw - It's a bit kiddy-looking but it's cute and fun
The Sly Cooper Series is a lot of fun too and again is easy to learn.
Paper Mario Thousand Year Door is great fun and very forgiving.
Ghost Trick is incredibly deep and there's no combat to learn and deal with.
The other stuff suggested sounds good too so I haven't bothered to repeat them. I tried to throw out random games as I don't know what she likes besides the sims and rift but found it confusing to learn (I did too)