What game to replace Plants vs Zombies?

[bledd]

My mum loves this game, but she's completed it twice now

What similar type of game can she play?

She doesn't really like Peggle..

 

[bledd]

At first I thought "my mum will love this" until the later levels where it got harder, but she stormed through it

She did her first 'pass' of the game without even using the shop!

 

[bledd]

Mine tried World of Goo but when I wasn't there telling her what to do she was lost.

this is what I fear..

she's done the mini games in PvZ etc, will try bejewelled

actually, just googled that, she won't like that