Before proposing, make sure she actually wants kids and will be a good parent. Watch how she treats her own family and yours. Red flag: she's okay with toxic family members or won't talk about her past.
Chapters
If you want a family, it's pretty important to make sure she does too. It's also important to pay attention to how she treats her family and how she treats your family. How important is this to her? And let's just clarify, not everyone was raised with the perfect family. And if she's in that situation and she's willing to be open about that and acknowledge that while still striving to now in the future create a happy family life, that's completely appropriate. On the flip side, sometimes you have people who are like, "Well, I believe in family, so I'm gonna put up with toxic family members." And that's not really a situation I would ever get involved in. So it's not so much that she has to come from the ideal family, just make sure that wanting a family and wanting to be that nurturer in the family unit is important to her. Make sure she actually likes children and looks forward to nurturing them and caring for them.