Stepparent Adoption in Ma

Hi everyone! I just wanted to get some advice from anyone that has been through a step parent adoption, and hopefully shed some light on some things as well as some encouragement. My husband and I have signed the petition and have our court date in 2 weeks on the 16th. As it is my husband's ex has made it very clear that she does not want me adopting the kids. I'll get a short summary of all of the events following up to this, to hopefully shed some light on my situation. I met my husband in 2012 when his ex had custody. In 2013 a 51A was filed and supported on his ex for neglect and physical abuse on his a daughter. Another 51A was filed that same year when we called dcf on his ex for physical abuse, as we showed up for a visit and his son had a handprint on his face. Upon further investigation by dcf it was supported that both kids were physically, sexually, mentally and emotionally abused in her care by her then husband with her knowing. She added to the case with physical abuse and neglect on both kids. In 2015 my husband was granted sole legal and physical custody of both kids from the abuse. Her youngest child (not my husband's) was adopted by the foster parents from the abuse. Both of the kids were diagnosed with PTSD and enrolled in therapy from the abuse. Since my husband was granted custody there has been fewer and fewer visits and calls. Both kids are petrified of their mother to point that they will do absolutely anything she tells them to do for fear that they will be beaten or screamed at. We have been threatened over numerous things many times over the years. In 2016 my husband's ex got pregnant. Which started issues with the kids because they have been told my their mother that she only wants a baby. Now the baby is born and my stepson is saying death threats about this new baby that he has not even met yet. Both kids say how they don't want to see their mother who they haven't called mom in years. Even their therapists and schools say that there should be no contact between the kids and her. At the end of last week we found out that she filed a motion for unsupervised visits and overnights. Mind you she has seen them 3 times all this year with 2 of those visits ending early because the kids got physical with her, and the visits are already supervised from the abuse. Though our attorney has never lost a contested adoption case, and told me that she wont take one on unless she knows she will win. I'm still anxious about this whole process. I have no idea what to expect at the preliminary adoption hearing especially now with her new motion. I don't even know if the judge could start the TPR hearing because of it, since the adoption and the motion are held in 2 different courthouses. She can't guarantee our win in all of this, so I was hoping to get some words of wisdom from others that have been through it!!