Imaginary Friend

Just a quick question because I might of messed this up:

So I did a cheat to get my sims up to a child from a new born because I didn't want to wait so long. So when I did that, a few days later I got a gift in the mail (a doll (snuggles)) and I've been playing with him/it but when my sim turned into a teenager all they could do was pick up snuggles? So I was wondering if I could do anything else or I just messed up the game? XD