How many times you've met her personally? Some Filipinas are always in a hurry to marry their white boyfriend.
I've introduced some white friends to some of my friends and they married on the first time they met. I was really against that and told my friends to know their BF well as I don't wanna be blamed in the end and will be hard to escape if you have kids, and feel you are hooked well.
Sometimes, I am partly blamed.

If your patience is not that long, you must tell your girlfriend about that. She needs to know your weakness and strongest points. You will be the one who will suffer in the end if she will leave you after your marriage. You will spend a lot for her and her kids,,, and in case she loose her temper and give you up, then everything will be gone.

There's no harm in knowing her better especially if she has kids.
Tell her to ask you a thousand questions about you and your behaviour before she make decision to marry you.