I know its a struggle to actually start a new diet and eating right plus the economical issue, but believe me if all of you sat down and talked about it and all aproved it would be easyer on you. I gained almost 100 pounds in less then 2 years because a depression i was strugling with and what i allways used as an excuse (not saying that you are) was that i didnt have the money nor the time to go to the vegeterian markets and buy food there becasue they are so expensive .... turns out i started dieting 3 weeks ago and i make a list of my 3 meals a day ... and you know what? is not as expensive as i thought =P i allways save $50 for my grocerie shopping i eat oatmeal in the morning and a piece of whole bread, a vegeterian salad for lunch and a fruit cocktail for dinner and i drink about 64oz of water everyday plus i drink 8 oz of water with one yellow lime (no sugar) every morning . I dont eat that everyday tho i change plates from day to day i also try to take proteins in my food and keep my calories down to 1,400 calories per day tops and i feel much better . The key here is for all of you to come to an agreement really if you all do it it will be easyer and as for your twins if you get them to eat healthy plus giving them the vitamins they need they will be ok. You and your daughter should exercise to like taking walks or riding a bicycle that would give you time to spend with her aswell
And i tell you again its hard to do the change but when you finally do it, you will see how easy and convenient it really is .... Plus the meals are so easy to do it wont take more than 30 minutes . In here you will see a lot of ppl trying to give yoiu advise from comparing theyr lives to yours or saying ived been there done that but that wont help and you may even feel a bit annoyed y it cuse many are not getting at the stress level your problem is at .... But all begins in your mind if you can change yours and your famillys in to thinking ... "Hey! Eating right is much better!" you will be able to do it
P.S if you need anything else you are more than wellcome to mesege me good luck 

