I’m happy to hold Perpetual Income & Growth, although in my case it is for the income rather than capital growth. Saying that, Mark Barnett has delivered both during his tenure.
Alternatives in the same sector to consider would be Lowland and Finsbury Growth & Income. LWI has greater exposure to smaller companies, including those listed on AIM. These could be areas that are able generate capital growth going forward, and this might not be the case with some of the high-yielding large-caps - based more on a feeling rather than anything with substance to it.
FGI has a smaller number of holdings - 26 according to the latest factsheet - and this is an approach that might also deliver long-term growth in capital, and especially if we do experience slow-to-no growth for a number of years.
Additionally, I suggest looking at the UK All Companies sector (formerly known as UK Growth), simply because there are ITs in this sector which do not have to consider income generation, whereas ITs in the Income sector might need to hold more companies with lower growth prospects in order to maintain or increase their own payouts.
Given that your neices potential lack of interest in investing, I would avoid specialist sectors, such as commodities and health care etc., and stick to more generalist trusts. But this potential lack of interest is also an argument for investing in trackers: it does remove the issue that some people have with ‘average manager performance’ and the potential to underperform against ‘the market’. If this is an issue then trackers are the way to go. Personally, I do not see the UK market as being a desirable investment in itself (leastways, for me, if no-one else), and this is mainly due to the large representations of specific sectors.