Jurek ,
we really need to see an image of the ship, so that we can ascertain when and how the model was made. If recent, by that I mean within the period of "kit" ships then the repair would be easier. You mention an elderly relative so I imagine this model has some age.
If, as some of the models I have restored, the ship is from the pre 70's and was built from plans only, then the repair and restore is much harder, not impossible, but again we need to see what you are tendering. Restorations and repairs can take longer than a direct build. In a short space of time, relative, over 12 months I restored three what would seem to be identical vessels, all being the Ark Royal, and all built from the same "Model World" plans but all different.
Ashleys idea is almost original, being the Victory you could depict her now as she emerged from that battle with stumped masts and rigging askew, there are several images of her in that state. That, to me would be quite novel. Currently I have a full work load for the next 4 years, without my own interests being built too. Good luck I hope someone can assist.
Kim
This one above also wanted a display case.

Here's two of those Ark Royals, as you can see they have the original builders style in them.