Sorry to hear about your friends car accident Jodie, that must've been such a scare for you.
The first thing I'd do if I were you would be (besides visiting your friend with a bunch of 'hope you feel better flowers') is to fat proof your home.
Go through the house with a plastic shopping bag and fill it with biscuits, chocolates, lollies, potato chips and anything else that we dieters consider evil foods
Then very nicely ask your dear husband to please lock them in his car, so during your weaker moments you won't have that temptation there.
This method of fat profing the house worked for me and I have now learned never ever to bake a cake (the smell is too tempting) I just buy a cake when I'm absolutely sure somebody is coming for a visit.
I now only buy biscuits for the family that I know I can resist (arrowroot biscuits)
Be brave enough to face the WW scales after downing the evil foods. I went to WW one week with a 3kg gain.
They are mature adults and nobody said a word. I think they know our monthly cycles and our shoes/clothes and our temporary regressions will all have an effect on the scales.
If you don't face their scales each weak it will only make it easier for you to leave (believe me I've been there, done that)
The brain tells you to miss one week, then the next week you see you are only the same as two weeks before so you jump one more week, then the brain says "ah, you've missed so many you may as well quit." Just don't let that happen, no matter what the scales say, stick with it and you will definitely be heaps slimmer by summer.