To be worried about my sister

[Pondlife87]

My sister met a guy on Facebook 2 weeks ago and has been on 4 dates with him.
She told my Mum yesterday she is paying for them to go on holiday to Amsterdam next week. My Mum called me as she is really worried. My sister is 30 buy very innocent and not very street wise. She has lived a very sheltered life.
AIBU to be worried? She hasn't met this man's friends or family, so has nobody to vouch for but his character.
I appreciate it could just be him being romantic, but it seems a little intense to me after 2 weeks.
There are other factors that make me worry more, but I'm unsure how relevant they are....

I have over 40 dms from men like this. Occasionally I ask them how they are. Well, they are invariably lying in bed (at least the lying part is right) or they love me. I just ignore now and leave them to it.

He's love bombing her and potentially about to sell her as a prostitute.

Sorry wrong thread

why do you think of trafficking over thinking a bit I would maybe be concerned about the suitcase thing but she is 30

My concerns are that if 1. he is paying for her to go on holiday there is a lot of obligation, 2. She doesn't know him properly to be able to suss him out 3. Extreme case i have considered the sex trafficking, or violence.
The additional information i omitted is that my sister has mental health problems (depression and anxiety) and has recently come off her meds. She also broke up with her boyfriend 3 days before she met this new guy. She also told me this man has had a troubled past. He also still lives with his ex of 10 years even though they broke up early this year.

None of what you've just saidbsuggests your sister is particularly "sheltered" or can't run her own life - by your own description she's had plenty of relationships and has had hard times.

You may not want to follow her approach to intimate relationships, but I don't think she's likely to end up trafficked (!) (How many native British women without SN or great vulnerability get trafficked to Amsterdam each year, exactly?).

You don't have to date this guy yourself, or like him. You just have to stay out of it. You're infantilising her quite weirdly.

Maybe sheltered isn't the exact right term. I think i mean naive and not had a lot of negative experience to deal with that she has sorted out herself (she Is very reliant on my parents I.e. she is in debt with my parents, her ex, credit cards etc).
I am just worried she is getting caught up in the moment and not considering all the facts or risk assessing. I would never tell her what to do, but don't know I'm within my rights to encourage her to consider another perspective for her own safety.

Mumsnet always confuses me further though haha. Too many contrasting opinions. I guess i only have all the facts, and therefore can only really answer my own question. Thanks for the advice people.