Guests Coming to Stay

Its been a very long night. I've been tossing and turning most of the night worrying.
My fella got a call yesterday from his sister, who lives away. We haven't heard from her for a while so hoped everything was ok, the last we did hear was she was getting married at Xmas out of the blue, she never even mentioned she had a fella!
What has taken place was a spiral of hitting rock bottom, the new husband was a heavy drinker, abusive and lazy, instead of him raising to her standards and cleaning himself up, she sunk to his level and started what now uncovers to end up drinking daily with him and neglecting everything else.
Her two elder kids are old enough to go their own way, but the two little ones (6 and 10) is what's been concerning me, they are really sweet little kids and deserve some stability and security, its not their fault. As from last week they have been homeless, her landlord evicted them so its been garages and friends sofas for a week. Yesterday she woke up and phoned for help, the social services want to take the kids into care until she can get another place to live. She's stayed in the same job for 11 years so has a good job there, what she doesn't have is enough for a deposit and a months rent up front.
We have offered to take the 2 small ones here until she can sort herself out housing wise and get a home ready for these kids, they must have had such a shit time of things recently. I can get them into a local school while they are staying and although we are already squashed with 4 teenagers we are going to make room somehow... It looks like me and Steve will be getting the couch.
My family are all saying I cant take them as I have enough on my plate now, but as long as my lot all help me here with them we will manage just fine. Its better they are with family who love them even if it is a big one, than be taken into care in my eyes.
The kids are really excited they are 'going on holiday to aunties' and arrive today! meanwhile I need to buy some sleeping bags for me and Steve..
You really do have to be mad to live here...lol