Wife took the kids and don't know what to do

Hi, some info first:

1. Me (husband) and wife together for 15 years. 2 year old and 7 year old..
2. Had a rough start. Both very stubborn and defensive. Some physical abuse and threats from both sides. outgrew this years ago (before kids)
3. both worked and good income. Never stressed about cash.
4. In 15 years she had about 4 episodes triggered after an event. Last year we moved from another country, her mom diagnosed with cancer (clear now), sexual abuse at work (also sexual abuse when she was 12), lost her job and adjusting to Aus
5. Moved here in June. All was fine until dec. Got a call from Child wellfare. Accused me for abusing her because someone noticed marks on her skin. Was nail marks of our 2 year old. 7year old said his mom hit him with a pan over the head. Don't think this was true. This was so badly handled we both laid a complaint. Senior person phoned us in Jan and apologized. They provided 3 months childcare for the little one.
6. My salary covers our expensis and very little spending. Idea was that she brings in money with photos. Was good for 6 months and then she got too scared to work with kids after child services.
7. She started spending on my credit card putting is very bad in debt. To such a point that food budget is from 1.5k to 1k and our spending is like 200 per month.
8. Her tasks should have been like 1 or 2 shoots a month, look after the household, the 2 year old. Both kids in school now and she doesn't do household work (limited) and no shoots. This additional financial stress made me react in a badly. I was verbally abusive without thinking of it. I told her she was lazy, useless, bad mother coz she doesn't make food for them, digging a whole for us all. I was mad due to the situation and really feel bad that I actually did this.
9. From Jan she got panic attacks. Started taking anti depressions (made things worse in the past) and now. She is going out of her way to hide things etc. If i ask her for help she doesn't care. Around start of june she was at a psychologist and went to a gp after. Gp phoned me to cone in and when i got there she wanted to do self harm. 12 june she saw a psychiatrist and just told me he said she has stress and post natal depression. 15th she googled Borderline and Narcissist fall in love (I know she thinks I'm a narcissist coz even gave me quizzes). 16 she wrote suicide notes saying its all her fault and she is ill. 19the she couldn't even dress herself. Asked me to bump up private medical to go to a clinic. Went to the gp for referral and he suggested second opinion at psychiatrist. Docs was emailed and they started making plans for the wife to go in. I worked till 5 30 and fetched the 2year old. Got home and she was packed and police arrived. She is now in some safehouse as if i am the worst person alive. I miss my kids and I don't lnow what to do. Her aunt has Bi polar and I think she might have been diagnosed with Borderline personality disorder but not sure. I just want to see my kids 😞