I suggest to message the instance admins & everyone who facilitates the blocking efforts, telling them the BTC / LTC addresses, so that they can quicly set up corresponding filters.

It is almost certainly harassment. At some place (which I’m not going to mention), there are photos of her that look very much like her phone was hacked to take pictures without her knowing. All information that I’ve seen about her is consistent with her being a real person, and it is the kind and context of information where it’s practically unthinkable that she would be sharing it herself.