Did you also report the dog being abandoned? Do you want to keep it or re-home it? Depending where you are, animal abandonment can be considered
a "crime".

You should try mailing her a notice (hopefully it will be forwarded) saying that as of (pick a date & insert) all property including animals left will no longer be
considered hers. That is reasonable...after that I'd donate any clothes & personal effects left to the nearest women's shelter or thrift store, & decide on the
animals. Even IF your mailed notification comes back to you as refused-unclaimed-or unforwardable, that gives you PROOF that you made a good effort to
contact her and that protects you legally.

Sorry you're having to deal with this...she's being very immature.