How has DD's musical.ly fan used a private Facebook pic of mine?

[Corialanusburt]

Is it a person or just some sort of computerised spam?
DD has a musical.ly account. Tonight I noticed that someone had liked every single thing DD has posted and made some benign comments e,g. You're cool. I then spotted that this person had used a section of one of my Facebook photos as their profile picture. This photo is only available for my friends to see.
I am a bit spooked now. How has this happened? Any advice appreciated.

Is it a sock puppet set up by DD?

Very unlikely. I don't think she'd think of doing that.

I bet your dd has done it to make her page look more popular

I want to know now but she's asleep. She's only 10 so not sure she'd have gone to the trouble. I clicked on their profile and they'd followed 4 other people with same unusual first half of user name as her.
If she's not done it herself, what else could account for it?

musical.ly/privacy.html

You could contact them directly?

I think it will be something like this

musicallyfame.org

You were all right, the monkey!! She had created the profile herself.

I'd never heard of musical.ly but we got a safeguarding warning from school that it was widely used by child sex offenders for grooming children.

I was going to say, you can set the privacy so only friends she approves can see her videos. I did this with my DD and she was not to accept anyone she did not know. She got bored of it in the end though and doesn't use it anymore.