Okay i know im going to get scolded for this but, i really need help.

Currently im free feeding, yes i know bad bad thing to do. but hears my problem, sadie won't eat! she is a grasier. she eat a few bites and then walk away for hours, then come back after playing and take another bite. and walk away, minnie doesn't care much for dry food she will take 2 kibbles and play with them, then eat them. but my hubby feeds her wellness about half a can when he gets home from work every day. about 5pm. she eats every thing in her bowl. we mix in a little kibble with it to.then in the morning i feed minnie again. about 9am but sadie doesn't want anything to do with can food, never has. so im frusterated now. and don't know what to do.I have litterally tried all types of can dog food, she won't touch it. they get chicken strips and chew ezz everyday and sadie eats a salad whenever i have one, which is just lettuce, tomatoe and carrots, no dressing about once a week at least. i know shes over weight, but i need advice on how to handle this. should i put down the food bowl twice a day or?I tried giving her 30 minutes to eat out of the bowl i put down when i feed minnie, she just walks away. I did this for 3 days and finally gave inmy hubby is at his wits end and wants to put them outside at night... i don't. I know minnie is eating good but it bothers me that sadie isn't. also we have a horrible time lately with them getting up every 30 mins at night. i usually get up with them and take them out but they just sit there  should i pick up the water bowl at night? cause we have been finding more accidents when we get up then usual to.  im just so upset because we were doing so good. they sleep with us at night and usually don't get up. I know we don't walk them enough but its 110 outside and we both work different hours. any advice would be greatly appreciated!