The Shoutbox
Well, I just don't like this woman. I thought she was a snake from the begining.

5 months after my mom died, she was there cooking us dinner once a week for 6 months. The whole time I told my dad she was trying to move in on us and that they would end out dating. He said I was wrong and totally off base.

Surprise! He went out with her.

He lies to me all the time especially about her. Too many things to list. I guess I just have a hard time believing him about anything anymore.

I dunno...
Bobby, My mom died when I was 9 and my Dad started dating about one year later and was engaged two years later. I'm not sure how communicative your father is (mine is not very), but believe me when I say your father is never, ever going to forget your mother and he is never, ever going to try and replace her.

Death is a whole helluva lot different than a divorce, it carves an irreplaceable, permanent hole in you. And that hole can become crushing depression in no time whatsoever.

Speaking from someone who has gone through what you are going through, please believe me when I say you need to sympathize with your father's situation - regardless of how well he hides its weight on him or how heavy that weight seems on you.
Have you ever eaten something where it tastes fine but, you're not really sure if it's still good?

I found a really awesome game this weekend (HERE), but it's harder then hell.
I will say this, too: Divorce has different issues than widowhood. Divorce often means you are NOT ready to date for at least two years due to trust issues, etc. Widowhood has a certain purity to its sadness that could mean a person is ready to date again sooner.
What I did when I was single again (divorced, though, not widowed) was to wait three years to start dating again, and to never bring home dates for the kids to meet unless they were serious. And really, that meant I ended up bringing home the man I ended up marrying (five years after the divorce).
Your feelings are understandable, but it is different losing a mother than it is losing a spouse. Someone who loses a mother isn't looking to replace her in ANY form. But someone who loses a spouse could very well have a sense of ache and loneliness that needs to be filled at some point down the road.

You can't really compare the two.
I don't think your dad can help what your very-young sister will think if he dates within the next five or six years, even. Her memories of her mother are going to be sketchy after time passes, no matter what, simply because she was so young when she lost her mother.

Whether or not your dad dates again isn't going to change that part of the situation. Having raised children myself, I tend to think that it's better for your sister to have a mother-figure in her life.
No-one will ever replace your Mum Bobby, no matter how you Dad feels about her.
But I REALLY don't want her to view this specific woman as Mom.

She doesn't know my Mom, so I'll do my best to show her who she was. I don't need someone else to try and show her who she needs to be. She can learn that from my Mom through others in my family.
BobbyB: I think even if he waited till your sister was 3 or 4, she could still see a new woman as "mom."
Well, I guess I feel like my Dad views my Mom as replaceable.

He seems to be over it and with me having a 1 year old sister, I don't want her to view someone else as "Mom" and would just prefer for him to stay out of relationships.