Should I fool myself with this woman, please help!?

I am a 21 year old bisexual woman who has a huge crush on this 50 year old woman. I didn’t come out to my parents because I know they will not be supportive and maybe even a little ashamed but that’s the decision I am making.  I tried to tell her once and she flipped. I came out to my cousin, it wasn’t intentional because I was drunk but he is very supportive and still loves me. I never had a boyfriend and since I was very young I liked boys and girls. I am shy to tell my mother I like a boy, so imagine a 50 year old woman.
 
When I have a crush on a boy I feel bad because I am always thinking of her. She is always in my mind.
 
People might say I’m wierd but she actually makes me happy. When I see her and when she speaks to me I have butterflies. She works at my grand-parents residence. My grand-parents moved into this old folks home three years ago, when I first met her
I really could’nt see myself licking her so much. At first she was very shy, I then learned that she took care of her two brothers and father when her mother died when she was young. She never married, I dont even believe she ever dated, neither do I.
 
She doesn’t have any childreen and the way she talks about men to me says, she doesn’t care much about them. She is not nasty towards men, the passion just isn’t there. My family sees her as if she doesn’t like either sexes, she is to no one, not men nor women, I do not agree, I say she is a lesbian because she seem’s to like me a lot. When I call and reserve to eat with my grand-parents she is always like.
“Are you also coming tonight!?“ She always touches my hands when she speaks to me. She sometimes want’s me to show her some of the new clothes I buy for myself, we lend one another movies, she want’s me to bake her some cookies. About a week ago I gave my grand-parents a hug before I was about to leave and in front of everyone she says “Where is my hug?“ so I go and hug her. I mean I might be crazy but is she into me or is it just a friendly thing.
When I give her hugs she never lets me go, she might need someone so deeply in her life she just wants a friend, but I want more. On Sundays there is a little concert for the residents while they watch it I go to talk to her. I can spend two and even three hours talking to her. We talk about everything and anything. I want her to fall for me, it’s just I cannot see it happening on her side. I mean, would you act like this towards a friend or towards someone you have a crush on?
The way she looks at me is not the tipical way a person looks at someone she has something in her eyes, something I cannot pinpoint and this is what is driving me crazy. She doesn’t look at anyone else like she looks at me.
I just need some advice should I try to pursue this and see where it goes or just quit while I’m ahead?