It's a scam. Guaranteed.
What happens is the girl wants you to go into Private Chat, which is anywhere between £2-£5 a minute. She will laugh at your jokes etc as she wants you to stay on Cam as long as possible. All this is done to the backdrop of you two eventually meeting up.
She will want to arrange the meet via Private Cam and getting to know you may consist of one, two, three and even more sessions.
Eventually you'll have spent a few hundred ££ and then the arranged meet will never happen. Millions of reasons/ways she can terminate your Cam sessions or planned meet.
There are dozens of these Cam Scammers on AW at the moment... They 'play' on the fact you desperately want to fuck them.... and it's a good earning scam. The decent ones can pull in £4/500pw