Question Regarding Watching Someone's House Plants While They Are Abroad. I Feel Like I Should Be Laughing This Off But I Need A Legal Opinion.

location: Colorado, USA

I'm going to keep this short. I promise it's interesting but also dumb. My wife had an acquaintance who is not a legal US citizen but lives here as a resident or something similar.

She was leaving the US for a few months in early 2020 and asked us to watch around 10 of her houseplants for her while she was gone. She said she'd be gone 3-6 months.

Covid happened and she was unable to obtain a visa to get back in the country.

The last we heard from her was late 2020 her saying she couldn't get back into the country. No talk of the plants or anything else.

6 years go by without a word from her. no questions about the plants or anything. I've basically accepted they are my plants now and have cared for them to the best of my ability. a few of them died over the years as it goes with plants.

just a few days ago, she messages my wife saying she is back in the country and wants her plants back. Now I am a bit taken aback because I love these plants, I've put more work into them than she has and have had them in my house triple the length of time she had them.

My wife semi pleads the case saying that we haven't heard from her and we love these plants and they decorate our home. This woman kind of scoffs at us and starts demanding we give them back and wants to see pictures.

She's had a history of ptsd episodes (my wife is a therapist) and we decide the best course of action is to just give the ones we have because we just want it to be done with.

My wife tells her to just come pick them up, she replies that she is sending a moving company since she is in California.

My wife sends pics of the ones we still have. The woman starts losing her shit saying we killed her orchids and that the ones we have look bad (they don't).

She begins demanding we draft up a compensation document for her or she is going to sue us.

Never once did I agree to be the guardian of her plants for this long. We agreed to a few months and when we lost contact for years, I assumed the plants were abandoned and now ours. There is no written contract or anything regarding the arrangement.

She is claiming emotional and financial damage even though I've sank hundreds if not more into these plants over the years.

there is zero legal ground here right? I told my wife to give her one more chance to pick up plants and then block her. she threatened us again with legal action so we blocked her.

she didn't check in once about the plants or ask if we were comfortable taking care of them for that long. The only reason we kept them was that I liked them. otherwise, I would've just given them away assuming she wasnt coming back.

edit: I'm going to leave this up for a few hours just so people can see it and get a laugh but seems the general consensus is she has no case.