Is my dad being scammed?

this is very confusing. My suggestion is sit her down on your own and talk about how you feel and that your dads happiness is more important than anything else and that you want to know all the details etc. If you decide from this that you don't like her or you think she is scamming your dad then ring the immigration office and find out about her visa and then get her deported, but be careful as this is a very tough decision as you will cause allot of heartache to your father if he does love her .