I got a chilli plant from one of my children for Christmas.

On Christmas day it looked happy enough, with plenty of small bulbous
red fruits. Now, the leaves are wilting and it doesn't look too goo.

It spent a couple of days before Christmas in the garage; since then
it's been in the rather warmer house.

I'd hate this thing to suffer a premature death - how can I prevent
that?

Daniele