My DD and her then Boyfriend (now husband) 10 years ago only aged 21 scraped together enough money to buy a "doer upper" house 3 bed, 1960"s good size garden corner house with a garage, it was previously an older persons house, in the south of England Hampshire.
With no money to spare, but had both sets of parents support. They had to live at their parents homes as all spare money was to tackled the house, they didn't go on holiday or out too ofter as they knew this was an amazing opportunity, and they had time.
They completely emptied it, stripped it back to almost nothing, pulled out the kitchen, but left the bathroom to last.
The survey was good so no major issues so just cosmetic.
Took about 10 months to make it habitable.
Everyone helped painting, stripping walls, with the help of youthful energy and YouTube instruction built the kitchen from cheaper flat packs.
Even bought a dismantled small conservatory to add to the back, as the sliding French windows had seen better days, significantly much cheaper to add that then replace the window (eBay).
Bought things bit by bit.. Biggest investment they changed the heating system, lost the large immersion heater put into the garage a combi system. Last job replaced bathroom again sourced carefully. It was amazing they did so well. They think they only spent around £25 k. With the help of family and friends.
Within 2 years they married, then 2 years later .. They then sold it for nearly £100k profit.
Now aged 32 they live in a large 4 bedded house (was 3 when they moved in) changed that one too.
It's so possible to get this very right I wish your DD the best it will happen don't rush.