Hi Op
I think you having been doing so well,
I think the issue is your sister sounds like she is overwhelmed at moment,
Or
Could be something else too going on in her life that she is not telling you about ,
Moving forwards I would seek /lean in to other kinds of support , good trusting friends, charities that are supportive to women and emotional well being type of thing in general,
Also definitely seek look into good therapy to address the issue or issues what sucked you into a abusive relationship in first place,
Often it is something about one's childhood or something in your past happen to you to shake your cofindence so had less self esteem,
Obviously made you that much more vulnerable in some way, /or combination of both,
Otherwise history will often repeat itself if the reasons issues of why you became involved in this type of dynamics of former toxic abusive enmeshed relationship is not addressed,
Also write down what are you comfortable with and not in any type of future relationships,
What thus looks like,
Healthy boundaries,
I also think womens Aid charity freedom programme shirt course would be beneficial to you,
Also pamper yourself such as if you can save up to have Holistic therapy treatments such hot stone massage ect ,
even half an hour will make you feel better,
Even joining a healthspa treatment place for sauna /Jacuzzis swimming pool sessions ...
Will make make you feel better too
It's worth it psychological wise
What kinds of interests do you like or curious about ?
Whatever they are try them,
When you feel better you are definitely less likely to put up with crap
It will help you know your self worth