Should i give up on girl i like?

I met a girl through my work last year and immediately fancied her. After picking her up a few more times and saying to colleagues how much i liked her, 1 of our female drivers told the woman that another driver liked her. I was also starting own gardening business up and she took my number of my colleague cos she said she needed gardener. A month later she phoned me and asked if i'd go look at her garden, whilst their i mentioned i knew someone had opened their mouth and told her i liked her. She laughed and said she was flattered but was not wanting anyone in her life at the moment but i may get a call from her 1 day about going out. On run up 2 xmas i done her a few favours and she bought me an xmas present and invited me up for dinner over the holidays. I then didn't hear from her until after new year and she phoned to apologise for not keeping the date but she had had problems. She then started to phone me every night and we would be on phone for over an hour each time laughing and chatting with each-other. We even took her daughter out 1 weekend and they stayed at my flat on the saturday night (she has a 7 year old autistic daughter). She is always asking me to run errands for her but insists on paying me over the top money even tho i said i will do it for free as she a friend but she insists. We have just spent this last sunday together and she told me she really really likes me and never wants to lose me as a friend and will do anything for me but nothing more than friendship will happen between us. She then later mentions about going away for a weekend together and taking me to meet some of her friends. We both in our 30's she been single for 5 years and me 2 years from a 14 year relationship. I have 2 daughters who she is reluctant to meet as my ex only just started letting me see them again after doing the usual control stuff and she says she doesn't want to rock the boat and my ex get funny again. Also wouldn't let me take her home sunday cos her ex may of been waiting at her house with her daughter an she didn't want to have any grief, but we not together so i cant see the problem with my kids, ex and her ex. I just don't know if i should walk away cos i really like her, not sure if i can handle just being friends when feelings are strong for her. She is a great woman, pretty, and a mind that really stimulates me, something my ex never had and she has ambition and goals in her life. Im willing to take on in my life her lovely autistic daughter, and many people have questioned why i would want to do that, and say most men wouldn't but they are worth it. anyway, this is the quick version, lol, just anting some advice Cheers