Here is the tax mans advice on gifts as capital gain
http://www.hmrc.gov.uk/cgt/intro/gifts-inherit-divorce.htm#1
The question was how much can breadstick give her nephew
The answers are as above but she now has to pick out the good stuff from the really c**p advice being offered.
If she gives the nephew £3000 this year and as bhg says £3000 over from last year there is no tax to be paid CGT or IHT by either party
if she has SOLD something to get the £3k, that she bought x years ago for £1k then ther may be CGT payable on that ( if she also disposed of > £10k other assets in that year)- but that is CGT on the something and not really CGT on the gift.