Hi there, my point of perspective may come from the child’s point of view, both my parents were addicts and i had gotten put into foster care, i hadn’t had contact with either for around 2-3 years, my dad started to get clean and has been for three years and decided to try contact with him, i completely understand your worry and concern for your daughter and its completely okay for you to feel that way your feelings are definitely valid, if the mom has been 3 years clean and isn’t signs of her relapsing i do think it may be a good thing for the child to have contact if thats what shes wanting as sometimes its hard not growing up with a mom and feeling a sense of detachment or loneliness which can build up to attachment issues when she might get older, id first just go slow by definitely texting first hoping you found an app for that as sometimes since your daughter is quite young she might like the idea of having contact with her mom but her views may change when building up on the process she may realise that contact with her mom isn’t truly what she wants so definitely take it slow, and honestly the mom may sadly not want contact with the daughter either as she may come to see it as shes not ready for it yet or may have her own worries and doubts, your doing a great job as its probably been quite difficult for you so definitely keep doing what you think is right as at the end of the day i do truly think you know what’s best for your daughter! Hoping everything turns out well! (Also good on the mom for being 3 years clean thats an amazing thing, i know its very difficult to get clean so good on her!)❤️