Comment by dust-jacket

That's just not true. Your 13yr old is your legal responsibility, whilst you have a home, they do to.

Someone who you generously take in now has a roof over their head but they have literally zero protections - you can argue with them tomorrow and be within your rights to throw them out.

Someone with nowhere at all to stay might die of the cold tonight.

Homelessness charities absolutely want to know which case you are in. They require different interventions with different priorities.