This tag 'Widows and Relationships' caught my interest hence my response.
Obviously your lady is enjoying your company very much, and it has only been, as you say, a few months. You haven't mentioned how long she has been widowed. Has she been widowed months or years? Speaking as a widow myself, I would never want to enter another relationship ever, but would sure go along with a friendship like you and she have struck up between you both. It seems a shame that you feel like cutting ties completely and moving on. What's your hurry? If you wanted to 'test the waters' you could try backing off a little bit... which might start to make her realise how much she misses you. While you are going out 2 to 3 times a week, talking daily on the phone, emailing and texting, you may already be fullfilling her every need so that she has no need for anything more. Would she miss you if you only went out once or twice a week? if the phone calls and text messages weren't so frequent?
I'm only trying to put myself in her shoes, and I'm thinking she has the best of both worlds... she has her independance, she has her social life, with you, and no commitments. Wow... I like that.
Why would you want to cut ties completely and move on so soon? Give her more time. There may be issues she has that you are unaware of. Crikey, give the girl a chance. A few months is not long enough for some people. I know some people can meet, marry and divorce in just a few months. Everyone is different. I'll be watching this post with bated breath LOL.