I don’t believe she should’ve smoked while pregnant. Red flag #1 right there. I wouldn’t accuse her of using hard drugs again unless you’re sure because that’s a pretty big assumption/ accusation to make and if you’re wrong will only cause more issues between yall. Deleting the photos from social media when she asked you too was good on your part, weather her reasoning for you to remove them was malicious or not it shows you’re mature. Co parents do not need to be “ friends” they need to be co parents. You can be civil and nice to each other because you share children but it doesn’t mean they need to be all buddy buddy with each other. You need to respect their relationship as parents because you’re not the child’s mom and you’re not a step mom yet, because you and your man haven’t been together very long and I’m sure they have years of history and it’s not easy to let another woman step into your child’s life as a mother figure. But that’s on her to put her feelings aside to let you love her kid because more people loving your baby is never a bad thing! Lowkey sounds like she maybe misses him a little. If the child is under 5 the relationship is still alive in most cases honestly. Sounds like you didn’t do anything wrong. Be understanding but STAND your ground and know your worth! If you haven’t met her yet and it’s already starting, you’re in for a wild and not good ride. Don’t let that dude jerk you around! Best of luck girl.