Ok, Natalie requested a workout plan, so here goes.
Right, so you want to tone up. That just means losing some fat. You can't lift weights to make muscles more 'defined' - muscle definition is just how little fat covers the muscles.
So, to lose fat, you gotta do cardio! You said you hate running, as we all do, but frankly there's no better cardio than running. But, if you can find a pool, swim. It's probably the second best cardio. Swim for 30-45 minutes, or longer if you're up to it, 3 times a week. Keep in mind that if you can do an activity for more than about an hour, you need to ramp up the intensity. An elliptical is also good, because it basically puts zero stress on your joints, and lets you pump out some HIIT, which is better for fat burning. You can do cardio more than 3 times a week if you want. You can do it 7 days a week, but hell, who wants to do that? Just make sure you're actually working hard.
You'll also want to be lifting some weights. Trust me, women look better toned. You're not gonna turn into a grotesque female bodybuilder. You'll look better with a bit of muscle. So let's type out a program you can try.
Monday - cardio.
Tuesday - do squats, reverse lunges, pushups, crunches, and planks. 4 sets of each. They're in the video I posted above.
Wednesday - cardio.
Thursday - get some dumbbells and do overhead press, dumbbell curls, lying tricep extensions, and if you have a pullup bar, do pullups/chinups. 4 sets of 10-12 reps for each.
Friday - cardio.
Saturday - rest, or cardio if you want to.
Sunday - same as saturday.
Give it a try!