Met someone who lied about her age, should I be concerned?

I (30M) matched with this amazing person, who I've now met 4 times. Great connection in every aspect, even though she is from half way around the world we have so much in common!

I initially thought she was 35 as her profile said but she's actually 42. I have no issue with this at all, in fact it's a plus. She's mature, smart and caring. She's CRAZY about me, I've never had affection like this! But should the lie be something to worry about? She has her reasons for it, I've not thought much about it until now. She told me on the first date before we did anything sexual. Personally I'm not concerned but rose tinted glasses and all that...

I'm not sure how my family will react, they're pretty liberal so I don't think they'll have any concerns. I think they just want me to be happy.

• Edit! I should have put why she lied. Essentially she's very far from home, alone and didn't want to be taken advantage of. She's had bad experiences before so anonymity was important. She also used a false name but told me about that pretty quickly.