Training plan advice for my dieting wife

After 3 kids and 10 years of incorrect eating I've finally convinced my wife to get serious about diet and healthy eating. She's dieted before, done aerobics and all that nonsense but hopefully she now understands that nothing stimulates the metabolism and makes one lose weight like a good weight program.

She needs to lose 15-20kgs and she'll be training with me at home. I only have a simple bench and free weights. What kind of exercises should she be doing? Anyone have links to simple training plans for a woman that simply wants to get back their figure?

a good plan would be some form of complexes. multiple compound movements as one set. SLDL, lunges, OH press, squat, bent rows done as one big set for 8-10 reps of each. rest 2 mins. repeat. try to get 5 rounds. building up to maybe 8 rounds. then change exercises and rep schemes. my wife has done this on several occassions and its been great. plus it only takes 25-30mins to complete.