I understand your goal is to rebuild your M but the money and the house are big deals.
Your W chose to leave you and decided she wanted to live alone. Her choice but you are not required to fund that choice and if she used joint funds w/o ANY conversation prior to taking them it's a respect issue.
Same with the house. If you will be splitting the proceeds of the house (no matter what the ratio of the split) her helping with the process of selling the house (repairs, upkeep and whatever else needs to be done) is not optional. Again, it's a respect and entitlement issue that needs to be nipped.
I am not suggesting you be ugly or aggressive but I would start approaching the admin side of things (money and house) in a different way.
I would say something along the lines of (for example)...
W: This summer will be a busy time for me and I would like to create a list of weekly tasks we both will need to be responsible for in regard to the house. Also, the funds you drew from our joint account will need to be reimbursed and I have decided it is time to begin splitting accounts and obligations. Thanks!
Who is paying joint bills? IMO 7 months is much too long to go without splitting bills and such. Sometimes it's not so much about the money itself but the idea of such disrespect is acceptable when it comes to JOINT property.
