You misunderstand a lot of the hybrid trust. Your daughters cannot buy a property through the hybrid trust. But they could borrow to buy units of the hybrid trust with the trust property being used as security.
However this will be complicated if the trust owns other property already.
A...
Who advised you to set up a HDT and why?
There is nothing wrong with hybrid trusts, they are still used today and are effective and have their place. But they can't, and never could, do all the things that some marketed them as supposedly doing.