Trying to motivate my mom

My mom is overweight and its causing her some health problems. She's decided to take up walking to try and lose some weight, and I'm very happy, but also a bit worried. I know my mom, and if she doesn't see results in the next few weeks I know she'll get discouraged and possibly give up. I do NOT want this to happen! So I've decided to join her on her walks to try and encourage her, and also am going to start making dinner so I know she'll be getting at least one healthy meal a day. I really want this to work out, I love my mom and I want her to live a long, healthy, happy life. Any suggestions on how to encourage other people to lose weight? Particularly when it comes to encouraging someone else to eat better?

well,maybe u could take her to talk to someone else who is trying to lead a healthy life. or u could get her to watch THE BIGGEST LOSER,really insipiring,

If she's like most moms, she will be encouraged to continue because it means seeing you more often!

If you can, try to make the walking (and any other exercise) a fun event rather than a task to lose weight.  My mother is the same way about results and it was hard to get her to start exercising and to eat right (she favored starvation diets). 

We started bike riding together with my father in part because it was fun and in part to encourage him to exercise (he has a severe heart condition and so can only ride thanks to a motor-assist bike).

I think the second key, after making it fun, is to emphasize fitness over weight loss.  I'm telling you what, my mom gained on the scale those first several weeks - but she looked so much better.  You could really tell she was much fitter, and she felt better.  It took a while for the feeling better part to hit, but I think it is something important that people miss.  If doing something like that makes you feel better than why not do it?